Upgrade react-native-flipper Android to Gradle 7 (#2619)

Summary:
- Resolve #2221

Pull Request resolved: #2619

Test Plan:
- Tested working example https://github.com/leotm/react-native-template-typescript
  - Commit leotm/react-native-template-new-architecture@2fd5737

![Screenshot 2021-07-26 at 09 07 06](https://user-images.githubusercontent.com/1881059/126955174-cd96087f-5201-4d4a-bb4a-18c951979c86.png)

Reviewed By: cekkaewnumchai

Differential Revision: D29933807

Pulled By: passy

fbshipit-source-id: 1440eee21da134e9d9087a28ad95724738786f10

Author: leotm

react-native/react-native-flipper/android/build.gradle

@@ -7,6 +7,25 @@
 
 // android/build.gradle
 
+buildscript {
+    // The Android Gradle plugin is only required when opening the android folder stand-alone.
+    // This avoids unnecessary downloads and potential conflicts when the library is included as a
+    // module dependency in an application project.
+    // ref: https://docs.gradle.org/current/userguide/tutorial_using_tasks.html#sec:build_script_external_dependencies
+    if (project == rootProject) {
+        repositories {
+            google()
+        }
+        dependencies {
+            classpath 'com.android.tools.build:gradle:4.2.1'
+        }
+    }
+}
+
+plugins {
+    id 'maven-publish'
+}
+
 // based on:
 //
 // * https://github.com/facebook/react-native/blob/0.60-stable/template/android/build.gradle
@@ -27,26 +46,6 @@ def safeExtGet(prop, fallback) {
 }
 
 apply plugin: 'com.android.library'
-apply plugin: 'maven'
-
-buildscript {
-    // The Android Gradle plugin is only required when opening the android folder stand-alone.
-    // This avoids unnecessary downloads and potential conflicts when the library is included as a
-    // module dependency in an application project.
-    // ref: https://docs.gradle.org/current/userguide/tutorial_using_tasks.html#sec:build_script_external_dependencies
-    if (project == rootProject) {
-        repositories {
-            google()
-            jcenter()
-        }
-        dependencies {
-            classpath 'com.android.tools.build:gradle:3.4.1'
-        }
-    }
-}
-
-apply plugin: 'com.android.library'
-apply plugin: 'maven'
 
 android {
     compileSdkVersion safeExtGet('compileSdkVersion', DEFAULT_COMPILE_SDK_VERSION)
@@ -74,7 +73,6 @@ repositories {
         url "$rootDir/../node_modules/jsc-android/dist"
     }
     google()
-    jcenter()
 }
 
 dependencies {
@@ -120,17 +118,14 @@ afterEvaluate { project ->
     task androidJavadoc(type: Javadoc) {
         source = android.sourceSets.main.java.srcDirs
         classpath += files(android.bootClasspath)
-        classpath += files(project.getConfigurations().getByName('compile').asList())
         include '**/*.java'
     }
 
     task androidJavadocJar(type: Jar, dependsOn: androidJavadoc) {
-        classifier = 'javadoc'
         from androidJavadoc.destinationDir
     }
 
     task androidSourcesJar(type: Jar) {
-        classifier = 'sources'
         from android.sourceSets.main.java.srcDirs
         include '**/*.java'
     }
@@ -148,13 +143,4 @@ afterEvaluate { project ->
         archives androidSourcesJar
         archives androidJavadocJar
     }
-
-    task installArchives(type: Upload) {
-        configuration = configurations.archives
-        repositories.mavenDeployer {
-            // Deploy to react-native-event-bridge/maven, ready to publish to npm
-            repository url: "file://${projectDir}/../android/maven"
-            configureReactNativePom pom
-        }
-    }
 }