chore: remove release-please in generated README.md (#3289)

In this PR:
- Remove release-please settings in README.md template because the
version is managed by hermetic build.

Author: JoeWang1127

library_generation/owlbot/templates/java_library/README.md

@@ -64,7 +64,6 @@ If you are using Maven without the BOM, add this to your dependencies:
 {% else %}
 If you are using Maven, add this to your pom.xml file:
 {% endif %}
-<!-- {x-version-update-start:{{ artifact_id }}:released} -->
 
 ```xml
 {% if 'snippets' in metadata and metadata['snippets'][metadata['repo']['api_shortname'] + '_install_without_bom'] -%}
@@ -99,7 +98,6 @@ If you are using SBT, add this to your dependencies:
 ```Scala
 libraryDependencies += "{{ group_id }}" % "{{ artifact_id }}" % "{{ version }}"
 ```
-<!-- {x-version-update-end} -->
 
 ## Authentication
 

library_generation/test/owlbot/java_unit_tests.py

@@ -278,6 +278,24 @@ def test_release_please_handle_releases(self):
 """,
                 )
 
+    @mock.patch.dict(
+        os.environ,
+        {
+            "SYNTHTOOL_TEMPLATES": f"{TEMPLATES_PATH}",
+            "SYNTHTOOL_LIBRARY_VERSION": "1.2.3",
+        },
+    )
+    def test_render_readme_success(self):
+        golden_path = os.path.abspath(f"{TEST_OWLBOT}/testdata/README-golden.md")
+        with util.copied_fixtures_dir(FIXTURES / "java_templates" / "render-readme"):
+            # This method needs read .repo-metadata.json to render templates.
+            # The file is located in FIXTURES/java_templates/render-readme.
+            java.common_templates(
+                template_path=TEMPLATES_PATH,
+            )
+            self.assertTrue(os.path.isfile("README.md"))
+            self.assert_matches_golden(golden_path, "README.md")
+
     def assert_matches_golden(self, expected, actual):
         matching_lines = 0
         with open(actual, "rt") as fp:

library_generation/test/resources/test-owlbot/fixtures/java_templates/render-readme/.repo-metadata.json

@@ -0,0 +1,18 @@
+{
+    "api_shortname": "cloudasset",
+    "name_pretty": "Cloud Asset Inventory",
+    "product_documentation": "https://cloud.google.com/resource-manager/docs/cloud-asset-inventory/overview",
+    "api_reference": "https://cloud.google.com/resource-manager/docs/cloud-asset-inventory/overview",
+    "api_description": "provides inventory services based on a time series database. This database keeps a five week history of Google Cloud asset metadata. The Cloud Asset Inventory export service allows you to export all asset metadata at a certain timestamp or export event change history during a timeframe.",
+    "client_documentation": "https://googleapis.dev/java/google-cloud-asset/latest/index.html",
+    "issue_tracker": "https://issuetracker.google.com/issues/new?component=187210&template=0",
+    "release_level": "stable",
+    "transport": "grpc",
+    "requires_billing": true,
+    "language": "java",
+    "repo": "googleapis/java-asset",
+    "repo_short": "java-asset",
+    "distribution_name": "com.google.cloud:google-cloud-asset",
+    "library_type": "GAPIC_AUTO",
+    "api_id": "cloudasset.googleapis.com"
+}

library_generation/test/resources/test-owlbot/testdata/README-golden.md

@@ -0,0 +1,202 @@
+# Google Cloud Asset Inventory Client for Java
+
+Java idiomatic client for [Cloud Asset Inventory][product-docs].
+
+[![Maven][maven-version-image]][maven-version-link]
+![Stability][stability-image]
+
+- [Product Documentation][product-docs]
+- [Client Library Documentation][javadocs]
+
+
+:bus: In October 2022, this library has moved to
+[google-cloud-java/java-asset](
+https://github.com/googleapis/google-cloud-java/tree/main/java-asset).
+This repository will be archived in the future.
+Future releases will appear in the new repository (https://github.com/googleapis/google-cloud-java/releases).
+The Maven artifact coordinates (`com.google.cloud:google-cloud-asset`) remain the same.
+
+## Quickstart
+
+
+If you are using Maven, add this to your pom.xml file:
+
+
+```xml
+<dependency>
+  <groupId>com.google.cloud</groupId>
+  <artifactId>google-cloud-asset</artifactId>
+  <version>1.2.3</version>
+</dependency>
+```
+
+If you are using Gradle without BOM, add this to your dependencies:
+
+```Groovy
+implementation 'com.google.cloud:google-cloud-asset:1.2.3'
+```
+
+If you are using SBT, add this to your dependencies:
+
+```Scala
+libraryDependencies += "com.google.cloud" % "google-cloud-asset" % "1.2.3"
+```
+
+## Authentication
+
+See the [Authentication][authentication] section in the base directory's README.
+
+## Authorization
+
+The client application making API calls must be granted [authorization scopes][auth-scopes] required for the desired Cloud Asset Inventory APIs, and the authenticated principal must have the [IAM role(s)][predefined-iam-roles] required to access GCP resources using the Cloud Asset Inventory API calls.
+
+## Getting Started
+
+### Prerequisites
+
+You will need a [Google Cloud Platform Console][developer-console] project with the Cloud Asset Inventory [API enabled][enable-api].
+You will need to [enable billing][enable-billing] to use Google Cloud Asset Inventory.
+[Follow these instructions][create-project] to get your project set up. You will also need to set up the local development environment by
+[installing the Google Cloud Command Line Interface][cloud-cli] and running the following commands in command line:
+`gcloud auth login` and `gcloud config set project [YOUR PROJECT ID]`.
+
+### Installation and setup
+
+You'll need to obtain the `google-cloud-asset` library.  See the [Quickstart](#quickstart) section
+to add `google-cloud-asset` as a dependency in your code.
+
+## About Cloud Asset Inventory
+
+
+[Cloud Asset Inventory][product-docs] provides inventory services based on a time series database. This database keeps a five week history of Google Cloud asset metadata. The Cloud Asset Inventory export service allows you to export all asset metadata at a certain timestamp or export event change history during a timeframe.
+
+See the [Cloud Asset Inventory client library docs][javadocs] to learn how to
+use this Cloud Asset Inventory Client Library.
+
+
+
+
+
+
+## Troubleshooting
+
+To get help, follow the instructions in the [shared Troubleshooting document][troubleshooting].
+
+## Transport
+
+Cloud Asset Inventory uses gRPC for the transport layer.
+
+## Supported Java Versions
+
+Java 8 or above is required for using this client.
+
+Google's Java client libraries,
+[Google Cloud Client Libraries][cloudlibs]
+and
+[Google Cloud API Libraries][apilibs],
+follow the
+[Oracle Java SE support roadmap][oracle]
+(see the Oracle Java SE Product Releases section).
+
+### For new development
+
+In general, new feature development occurs with support for the lowest Java
+LTS version covered by  Oracle's Premier Support (which typically lasts 5 years
+from initial General Availability). If the minimum required JVM for a given
+library is changed, it is accompanied by a [semver][semver] major release.
+
+Java 11 and (in September 2021) Java 17 are the best choices for new
+development.
+
+### Keeping production systems current
+
+Google tests its client libraries with all current LTS versions covered by
+Oracle's Extended Support (which typically lasts 8 years from initial
+General Availability).
+
+#### Legacy support
+
+Google's client libraries support legacy versions of Java runtimes with long
+term stable libraries that don't receive feature updates on a best efforts basis
+as it may not be possible to backport all patches.
+
+Google provides updates on a best efforts basis to apps that continue to use
+Java 7, though apps might need to upgrade to current versions of the library
+that supports their JVM.
+
+#### Where to find specific information
+
+The latest versions and the supported Java versions are identified on
+the individual GitHub repository `github.com/GoogleAPIs/java-SERVICENAME`
+and on [google-cloud-java][g-c-j].
+
+## Versioning
+
+
+This library follows [Semantic Versioning](http://semver.org/).
+
+
+
+## Contributing
+
+
+Contributions to this library are always welcome and highly encouraged.
+
+See [CONTRIBUTING][contributing] for more information how to get started.
+
+Please note that this project is released with a Contributor Code of Conduct. By participating in
+this project you agree to abide by its terms. See [Code of Conduct][code-of-conduct] for more
+information.
+
+
+## License
+
+Apache 2.0 - See [LICENSE][license] for more information.
+
+## CI Status
+
+Java Version | Status
+------------ | ------
+Java 8 | [![Kokoro CI][kokoro-badge-image-2]][kokoro-badge-link-2]
+Java 8 OSX | [![Kokoro CI][kokoro-badge-image-3]][kokoro-badge-link-3]
+Java 8 Windows | [![Kokoro CI][kokoro-badge-image-4]][kokoro-badge-link-4]
+Java 11 | [![Kokoro CI][kokoro-badge-image-5]][kokoro-badge-link-5]
+
+Java is a registered trademark of Oracle and/or its affiliates.
+
+[product-docs]: https://cloud.google.com/resource-manager/docs/cloud-asset-inventory/overview
+[javadocs]: https://googleapis.dev/java/google-cloud-asset/latest/index.html
+[kokoro-badge-image-1]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java7.svg
+[kokoro-badge-link-1]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java7.html
+[kokoro-badge-image-2]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java8.svg
+[kokoro-badge-link-2]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java8.html
+[kokoro-badge-image-3]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java8-osx.svg
+[kokoro-badge-link-3]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java8-osx.html
+[kokoro-badge-image-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java8-win.svg
+[kokoro-badge-link-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java8-win.html
+[kokoro-badge-image-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java11.svg
+[kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-asset/java11.html
+[stability-image]: https://img.shields.io/badge/stability-stable-green
+[maven-version-image]: https://img.shields.io/maven-central/v/com.google.cloud/google-cloud-asset.svg
+[maven-version-link]: https://central.sonatype.com/artifact/com.google.cloud/google-cloud-asset/1.2.3
+[authentication]: https://github.com/googleapis/google-cloud-java#authentication
+[auth-scopes]: https://developers.google.com/identity/protocols/oauth2/scopes
+[predefined-iam-roles]: https://cloud.google.com/iam/docs/understanding-roles#predefined_roles
+[iam-policy]: https://cloud.google.com/iam/docs/overview#cloud-iam-policy
+[developer-console]: https://console.developers.google.com/
+[create-project]: https://cloud.google.com/resource-manager/docs/creating-managing-projects
+[cloud-cli]: https://cloud.google.com/cli
+[troubleshooting]: https://github.com/googleapis/google-cloud-java/blob/main/TROUBLESHOOTING.md
+[contributing]: https://github.com/googleapis/java-asset/blob/main/CONTRIBUTING.md
+[code-of-conduct]: https://github.com/googleapis/java-asset/blob/main/CODE_OF_CONDUCT.md#contributor-code-of-conduct
+[license]: https://github.com/googleapis/java-asset/blob/main/LICENSE
+[enable-billing]: https://cloud.google.com/apis/docs/getting-started#enabling_billing
+[enable-api]: https://console.cloud.google.com/flows/enableapi?apiid=cloudasset.googleapis.com
+[libraries-bom]: https://github.com/GoogleCloudPlatform/cloud-opensource-java/wiki/The-Google-Cloud-Platform-Libraries-BOM
+[shell_img]: https://gstatic.com/cloudssh/images/open-btn.png
+
+[semver]: https://semver.org/
+[cloudlibs]: https://cloud.google.com/apis/docs/client-libraries-explained
+[apilibs]: https://cloud.google.com/apis/docs/client-libraries-explained#google_api_client_libraries
+[oracle]: https://www.oracle.com/java/technologies/java-se-support-roadmap.html
+[g-c-j]: http://github.com/googleapis/google-cloud-java