Remove obsolete, duplicate, and useless docs.

License text, setup instructions, and support info do not need to be
duplicated into every README, since they're already in the top-level
README. They were originally in each sample because the samples used to
each be separate Android Studio projects with different requirements
that could be checkout out independently in Android Studio. This is no
longer the case.

Most of the docs also included text along the lines of "This sample uses
the new Android Studio with CMake support", which hasn't been new since
2015, so doesn't really need to be said.

The prerequisites were mostly not true. Android Studio is not required
for any of this. Cloning the repo and running `./gradlew build` is
sufficient to build all the samples. They also were not being kept
up-to-date at all, since they mostly said "Android Studio 2.2 or newer",
which was definitely not true. I'm not what the oldest version of
Android Studio that will work here is, but I don't actually test
anything but the latest so claiming anything otherwise is just
misleading.

I haven't pruned or edited any of the real content of the docs. I'm sure
there are plenty of edits to be made there and a lot of expansion to do,
but those changes will be less mechanical and will happen separately.

Author: DanAlbert

README.md

@@ -146,7 +146,7 @@ For questions about using the NDK or the platform APIs, you can ask on:
 
 ## License
 
-Copyright 2018 The Android Open Source Project, Inc.
+Copyright 2015 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements. See the NOTICE file distributed with this work for

audio-echo/README.md

@@ -6,36 +6,13 @@ there is a optimized audio path that is tuned up for low latency purpose. The
 sample creates player/recorder to work in this highly optimized audio
 path(sometimes called native audio path,
 [low latency path](http://stackoverflow.com/questions/14842803/low-latency-audio-playback-on-android?rq=1),
-or fast audio path). The application is validated against the following
-configurations:
-
-- Android L AndroidOne
-- Android M Nexus 5, Nexus 9
-
-This sample uses the new Android Studio with CMake support, and shows how to use
-shared stl lib with android studio version 2.2.0, see CMakeLists.txt for details
+or fast audio path).
 
 ***Note that OpenSL ES is
 [deprecated from Android 11](https://developer.android.com/preview/features#deprecate-opensl),
 developers are recommended to use [Oboe](https://github.com/google/oboe) library
 instead.***
 
-## Pre-requisites
-
-- Android Studio 2.2+ with [NDK](https://developer.android.com/ndk/) bundle.
-
-## Getting Started
-
-1. [Download Android Studio](http://developer.android.com/sdk/index.html)
-1. Launch Android Studio.
-1. Open the sample directory.
-1. Open *File/Project Structure...*
-
-- Click *Download* or *Select NDK location*.
-
-1. Click *Tools/Android/Sync Project with Gradle Files*.
-1. Click *Run/Run 'app'*.
-
 ## Usage
 
 App will capture audio from android devices and playback on the same device; the
@@ -98,40 +75,3 @@ A couple of knobs in the code for lower latency purpose:
   playback audio experience. The app capture and playback on the same device
   \[most of times the same chip\], capture and playback clocks are assumed
   synchronized naturally \[so we are not dealing with it\]
-
-## Credits
-
-- The sample is greatly inspired by native-audio sample
-- Don Turner @ Google for the helping of low latency path
-- Ian Ni-Lewis @ Google for producer/consumer queue and many others
-
-## Support
-
-If you've found an error in these samples, please
-[file an issue](https://github.com/googlesamples/android-ndk/issues/new).
-
-Patches are encouraged, and may be submitted by
-[forking this project](https://github.com/googlesamples/android-ndk/fork) and
-submitting a pull request through GitHub. Please see
-[CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-- [Stack Overflow](http://stackoverflow.com/questions/tagged/android-ndk)
-- [Android Tools Feedbacks](http://tools.android.com/feedback)
-
-## License
-
-Copyright 2015 Google, Inc.
-
-Licensed to the Apache Software Foundation (ASF) under one or more contributor
-license agreements. See the NOTICE file distributed with this work for
-additional information regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the "License"); you may not use
-this file except in compliance with the License. You may obtain a copy of the
-License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed
-under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the License for the
-specific language governing permissions and limitations under the License.

bitmap-plasma/README.md

@@ -5,57 +5,6 @@ Android
 [Bitmap](http://developer.android.com/reference/android/graphics/Bitmap.html)
 from C code.
 
-This sample uses the new
-[Android Studio CMake plugin](http://tools.android.com/tech-docs/external-c-builds)
-with C++ support.
-
-## Pre-requisites
-
-- Android Studio 2.2+ with [NDK](https://developer.android.com/ndk/) bundle.
-
-## Getting Started
-
-1. [Download Android Studio](http://developer.android.com/sdk/index.html)
-1. Launch Android Studio.
-1. Open the sample directory.
-1. Open *File/Project Structure...*
-
-- Click *Download* or *Select NDK location*.
-
-1. Click *Tools/Android/Sync Project with Gradle Files*.
-1. Click *Run/Run 'app'*.
-
 ## Screenshots
 
 ![screenshot](screenshot.png)
-
-## Support
-
-If you've found an error in these samples, please
-[file an issue](https://github.com/googlesamples/android-ndk/issues/new).
-
-Patches are encouraged, and may be submitted by
-[forking this project](https://github.com/googlesamples/android-ndk/fork) and
-submitting a pull request through GitHub. Please see
-[CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-- [Stack Overflow](http://stackoverflow.com/questions/tagged/android-ndk)
-- [Android Tools Feedbacks](http://tools.android.com/feedback)
-
-## License
-
-Copyright 2015 Google, Inc.
-
-Licensed to the Apache Software Foundation (ASF) under one or more contributor
-license agreements. See the NOTICE file distributed with this work for
-additional information regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the "License"); you may not use
-this file except in compliance with the License. You may obtain a copy of the
-License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed
-under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the License for the
-specific language governing permissions and limitations under the License.

camera/README.md

@@ -18,56 +18,6 @@ Two API samples:
 
 - [Camera2 Java documentation](https://developer.android.com/reference/android/hardware/camera2/package-summary)
 
-## Pre-requisites
-
-- Android Studio 2.3.0+ with [NDK-r15+](https://developer.android.com/ndk/)
-  bundle
-- Android device running android-24+
-
-## Getting Started
-
-1. Download Android Studio from
-   [latest stable release](http://developer.android.com/sdk/index.html) or
-   [canary](http://tools.android.com/download/studio/canary)
-1. Launch Android Studio
-1. Select "Import project (Eclipse ADT, Gradle,etc)"
-1. Browse into downloaded sample directory, select webp/build.gradle
-1. Click *Tools/Android/Sync Project with Gradle Files*.
-1. Click *Run/Run 'app'*.
-
 ## Screenshots
 
 ![screenshot](ndkCamera.png)
-
-## Support
-
-If you've found an error in these samples, please
-[file an issue](https://github.com/googlesamples/android-ndk/issues/new).
-
-Patches are encouraged, and may be submitted by
-[forking this project](https://github.com/googlesamples/android-ndk/fork) and
-submitting a pull request through GitHub. Please see
-[CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-For generic questions about Android Camera and other feedbacks, please go to
-
-- [Stack Overflow](http://stackoverflow.com/questions/tagged/android-camera)
-- [Android Tools Feedbacks](http://tools.android.com/feedback)
-
-## License
-
-Copyright 2015 Google, Inc.
-
-Licensed to the Apache Software Foundation (ASF) under one or more contributor
-license agreements. See the NOTICE file distributed with this work for
-additional information regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the "License"); you may not use
-this file except in compliance with the License. You may obtain a copy of the
-License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed
-under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the License for the
-specific language governing permissions and limitations under the License.

endless-tunnel/README.md

@@ -13,26 +13,6 @@ to keep the focus on the Android Studio C++ integration. For example, this game
 contains textures and geometry hard-coded in code, which works for small demo
 games like this one, but doesn't scale well to real games.
 
-This sample uses the new
-[Android Studio CMake plugin](http://tools.android.com/tech-docs/external-c-builds)
-with C++ support.
-
-## Pre-requisites
-
-- Android Studio 2.2+ with [NDK](https://developer.android.com/ndk/).
-
-## Getting Started
-
-1. [Download Android Studio](http://developer.android.com/sdk/index.html)
-1. Launch Android Studio.
-1. Open the sample directory.
-1. Open *File/Project Structure...*
-
-- Click *Download* or *Select NDK location*.
-
-1. Click *Tools/Android/Sync Project with Gradle Files*.
-1. Click *Run/Run 'app'*.
-
 ## Screenshots
 
 ![screenshot](screenshot.png)
@@ -51,11 +31,6 @@ For more information about this library and its license, please see
 [readme.md](https://github.com/g-truc/glm/blob/master/readme.md) and
 [copying](https://github.com/g-truc/glm/blob/master/copying.txt).
 
-## Acknowledgements
-
-Most of this code was written by
-[Bruno Oliveira](https://plus.google.com/+BrunoOliveira).
-
 ## Walkthrough
 
 Source code is under app, it only contains C++ code, which is sitting at its
@@ -178,34 +153,3 @@ The whole game logic is contained in play_scene.cpp. We won't dive into a full
 discussion of it, but start reading from the PlayScene::DoFrame() method and it
 should become clear. It's a standard game loop that handles input, updates the
 world, checks for collisions and renders.
-
-## Support
-
-If you've found an error in these samples, please
-[file an issue](https://github.com/googlesamples/android-ndk/issues/new).
-
-Patches are encouraged, and may be submitted by
-[forking this project](https://github.com/googlesamples/android-ndk/fork) and
-submitting a pull request through GitHub. Please see
-[CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-- [Stack Overflow](http://stackoverflow.com/questions/tagged/android-ndk)
-- [Android Tools Feedbacks](http://tools.android.com/feedback)
-
-## License
-
-Copyright 2015 Google, Inc.
-
-Licensed to the Apache Software Foundation (ASF) under one or more contributor
-license agreements. See the NOTICE file distributed with this work for
-additional information regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the "License"); you may not use
-this file except in compliance with the License. You may obtain a copy of the
-License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed
-under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the License for the
-specific language governing permissions and limitations under the License.

exceptions/README.md

@@ -46,34 +46,3 @@ adapted.
 ## Screenshot
 
 ![screenshot](screenshot.png)
-
-## Support
-
-If you've found an error in these samples, please
-[file an issue](https://github.com/googlesamples/android-ndk/issues/new).
-
-Patches are encouraged, and may be submitted by
-[forking this project](https://github.com/googlesamples/android-ndk/fork) and
-submitting a pull request through GitHub. Please see
-[CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-- [Stack Overflow](http://stackoverflow.com/questions/tagged/android-ndk)
-- [Android Tools Feedbacks](http://tools.android.com/feedback)
-
-## License
-
-Copyright 2022 Google, Inc.
-
-Licensed to the Apache Software Foundation (ASF) under one or more contributor
-license agreements. See the NOTICE file distributed with this work for
-additional information regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the "License"); you may not use
-this file except in compliance with the License. You may obtain a copy of the
-License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed
-under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the License for the
-specific language governing permissions and limitations under the License.

gles3jni/README.md

@@ -13,57 +13,6 @@ ES 2.0 path:
 - Explicit assignment of attribute locations, eliminating the need to query
   assignments.
 
-This sample uses the new
-[Android Studio CMake plugin](http://tools.android.com/tech-docs/external-c-builds)
-with C++ support.
-
-## Pre-requisites
-
-- Android Studio 1.3+ with [NDK](https://developer.android.com/ndk/) bundle.
-
-## Getting Started
-
-1. [Download Android Studio](http://developer.android.com/sdk/index.html)
-1. Launch Android Studio.
-1. Open the sample directory.
-1. Open *File/Project Structure...*
-
-- Click *Download* or *Select NDK location*.
-
-1. Click *Tools/Android/Sync Project with Gradle Files*.
-1. Click *Run/Run 'app'*.
-
 ## Screenshots
 
 ![screenshot](screenshot.png)
-
-## Support
-
-If you've found an error in these samples, please
-[file an issue](https://github.com/googlesamples/android-ndk/issues/new).
-
-Patches are encouraged, and may be submitted by
-[forking this project](https://github.com/googlesamples/android-ndk/fork) and
-submitting a pull request through GitHub. Please see
-[CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
-
-- [Stack Overflow](http://stackoverflow.com/questions/tagged/android-ndk)
-- [Android Tools Feedbacks](http://tools.android.com/feedback)
-
-## License
-
-Copyright 2015 Google, Inc.
-
-Licensed to the Apache Software Foundation (ASF) under one or more contributor
-license agreements. See the NOTICE file distributed with this work for
-additional information regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the "License"); you may not use
-this file except in compliance with the License. You may obtain a copy of the
-License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software distributed
-under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-CONDITIONS OF ANY KIND, either express or implied. See the License for the
-specific language governing permissions and limitations under the License.