RNGP - Remove deprecated useJavaGenerator and reactRoot properties from extension

Summary:
This is part of a series of diffs to make the React Native Gradle Plugin (RNGP) variant-aware.

Here I'm removing two deprecated properties `useJavaGenerator` and `reactRoot`.

They were both not widely used, we had a deprecation warning and now they're just making the whole setup harder.

Changelog:
[Internal] [Changed] - RNGP - RNGP - Setup tasks to cleanup the Apk/Aab from unused .so

Reviewed By: cipolleschi

Differential Revision: D40547688

fbshipit-source-id: c4b8c1cef3a2abae1060e8ce2540e45d0313a4be

Author: cortinico

packages/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactExtension.kt

@@ -221,39 +221,4 @@ abstract class ReactExtension @Inject constructor(project: Project) {
    */
   val codegenJavaPackageName: Property<String> =
       objects.property(String::class.java).convention("com.facebook.fbreact.specs")
-
-  /**
-   * Whether the Java Generator (based on Javapoet) should be used or not. Please note that this is
-   * currently deprecated as the Java generator is not supported anymore. Default: false
-   */
-  @Deprecated(
-      level = DeprecationLevel.ERROR,
-      message =
-          "Please note that this is deprecated as the Java generator is not supported and react-native-codegen should be used instead.")
-  val useJavaGenerator: Property<Boolean> = objects.property(Boolean::class.java).convention(false)
-
-  /**
-   * The `reactRoot` property was confusing and should not be used.
-   *
-   * You should instead use either:
-   * - [root] to point to your root project (where the package.json lives)
-   * - [reactNativeDir] to point to the NPM package of react native.
-   *
-   * A valid configuration would look like:
-   *
-   * ```
-   * react {
-   *    root = rootProject.file("..")
-   *    reactNativeDir = rootProject.file("../node_modules/react-native")
-   * }
-   * ```
-   *
-   * Please also note that those are the default value and you most likely don't need those at all.
-   */
-  @Deprecated(
-      "reactRoot was confusing and has been replace with root " +
-          "to point to your root project and reactNativeDir to point to " +
-          "the folder of the react-native NPM package",
-      replaceWith = ReplaceWith("reactNativeRoot"))
-  val reactRoot: DirectoryProperty = objects.directoryProperty()
 }

packages/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/ReactPlugin.kt

@@ -117,7 +117,6 @@ class ReactPlugin : Plugin<Project> {
             "generateCodegenArtifactsFromSchema", GenerateCodegenArtifactsTask::class.java) {
               it.dependsOn(generateCodegenSchemaTask)
               it.reactNativeDir.set(extension.reactNativeDir)
-              @Suppress("DEPRECATION") it.deprecatedReactRoot.set(extension.reactRoot)
               it.nodeExecutableAndArgs.set(extension.nodeExecutableAndArgs)
               it.codegenDir.set(extension.codegenDir)
               it.generatedSrcDir.set(generatedSrcDir)

packages/react-native-gradle-plugin/src/main/kotlin/com/facebook/react/tasks/GenerateCodegenArtifactsTask.kt

@@ -38,9 +38,6 @@ abstract class GenerateCodegenArtifactsTask : Exec() {
 
   @get:Input abstract val libraryName: Property<String>
 
-  // We're keeping this just to fire a warning at the user should they use the `reactRoot` property.
-  @get:Internal abstract val deprecatedReactRoot: DirectoryProperty
-
   @get:InputFile
   val combineJsToSchemaCli: Provider<RegularFile> =
       codegenDir.file("lib/cli/combine/combine-js-to-schema-cli.js")
@@ -53,38 +50,11 @@ abstract class GenerateCodegenArtifactsTask : Exec() {
   @get:OutputDirectory val generatedJniFiles: Provider<Directory> = generatedSrcDir.dir("jni")
 
   override fun exec() {
-    checkForDeprecatedProperty()
-
     val (resolvedLibraryName, resolvedCodegenJavaPackageName) = resolveTaskParameters()
     setupCommandLine(resolvedLibraryName, resolvedCodegenJavaPackageName)
     super.exec()
   }
 
-  private fun checkForDeprecatedProperty() {
-    if (deprecatedReactRoot.isPresent) {
-      project.logger.error(
-          """
-        ********************************************************************************
-        The `reactRoot` property is deprecated and will be removed in 
-        future versions of React Native. The property is currently ignored.
-        
-        You should instead use either:
-        - [root] to point to your root project (where the package.json lives)
-        - [reactNativeDir] to point to the NPM package of react native.
-        
-        You should be fine by just removing the `reactRoot` line entirely from 
-        your build.gradle file. Otherwise a valid configuration would look like:
-        
-        react {
-            root = rootProject.file('..')
-            reactNativeDir = rootProject.file('../node_modules/react-native')
-        }
-        ********************************************************************************
-      """
-              .trimIndent())
-    }
-  }
-
   internal fun resolveTaskParameters(): Pair<String, String> {
     val parsedPackageJson =
         if (packageJsonFile.isPresent && packageJsonFile.get().asFile.exists()) {