[Docs][NA] Remove the New Architecture Landing page (facebook#4260)

Author: cipolleschi

docs/the-new-architecture/landing-page.md

@@ -21,7 +21,7 @@ We are excited to release a new version of React Native, 0.70.0. This version co
 
 ## New Architecture’s New Documentation
 
-Over the last few months, we have been working to add more content to the [New Architecture](https://reactnative.dev/docs/next/the-new-architecture/landing-page) section of the documentation. In the new section you can find migration guides, examples and tutorials to get you up to speed.
+Over the last few months, we have been working to add more content to the [New Architecture](https://reactnative.dev/docs/0.70/the-new-architecture/landing-page) section of the documentation. In the new section you can find migration guides, examples and tutorials to get you up to speed.
 
 Along with it, you can find new documents diving into [Why a New Architecture](https://reactnative.dev/docs/next/the-new-architecture/why) and [the various parts of it](https://reactnative.dev/docs/next/the-new-architecture/pillars). We hope this helps you better understand the rationale behind the new APIs.
 

website/blog/2022-09-05-version-070.md

@@ -109,7 +109,6 @@
         ]
       }
     ],
-    "New Architecture": ["the-new-architecture/landing-page"],
     "Legacy Architecture": [
       {
         "type": "category",

website/sidebars.json

@@ -16,7 +16,7 @@
 
 # Redirect New Architecture docs of all versions
 # Note: We had to delete the older versions to get redirects to work
-/docs/the-new-architecture/why                             /docs/next/the-new-architecture/landing-page
+/docs/the-new-architecture/why                             https://reactnative.dev/docs/0.75/the-new-architecture/landing-page
 /docs/the-new-architecture/use-app-template                https://github.com/reactwg/react-native-new-architecture#guides
 /docs/the-new-architecture/pillars                         https://github.com/reactwg/react-native-new-architecture#guides
 /docs/the-new-architecture/pillars-turbomodules            https://github.com/reactwg/react-native-new-architecture#guides
@@ -35,8 +35,8 @@
 /docs/react-18-and-react-native                            https://reactnative.dev/docs/0.69/react-18-and-react-native
 /docs/new-architecture-troubleshooting                     https://github.com/reactwg/react-native-new-architecture#guides
 /docs/new-architecture-appendix                            https://github.com/reactwg/react-native-new-architecture#guides
-/docs/:version/the-new-architecture/landing-page                    /docs/next/the-new-architecture/landing-page
-/docs/:version/the-new-architecture/why                             /docs/next/the-new-architecture/landing-page
+/docs/:version/the-new-architecture/landing-page                    https://reactnative.dev/docs/0.75/the-new-architecture/landing-page
+/docs/:version/the-new-architecture/why                             https://reactnative.dev/docs/0.75/the-new-architecture/landing-page
 /docs/:version/the-new-architecture/use-app-template                https://github.com/reactwg/react-native-new-architecture#guides
 /docs/:version/the-new-architecture/pillars                         https://github.com/reactwg/react-native-new-architecture#guides
 /docs/:version/the-new-architecture/pillars-turbomodules            https://github.com/reactwg/react-native-new-architecture#guides

website/static/_redirects

@@ -6,7 +6,7 @@ title: Speeding up your Build phase
 Building your React Native app could be **expensive** and take several minutes of developers time.
 This can be problematic as your project grows and generally in bigger organizations with multiple React Native developers.
 
-With [the New React Native Architecture](the-new-architecture/landing-page.md), this problem is becoming more critical
+With [the New React Native Architecture](https://reactnative.dev/docs/0.70/the-new-architecture/landing-page), this problem is becoming more critical
 as you might have to compile some native C++ code in your project with the Android NDK in addition to the native code already necessary for the iOS and Android platforms.
 
 To mitigate this performance hit, this page shares some suggestions on how to **improve your build time**.