Clean up after removing the Stetho dependency from open source React Native

Summary:We've removed the Stetho dependency from open source React Native, removing stuff that's not needed anymore.
Closes https://github.com/facebook/react-native/pull/6864

Differential Revision: D3150758

Pulled By: mkonicek

fb-gh-sync-id: fad4408df16f52914357dc474eb1d8d965cfac60
fbshipit-source-id: fad4408df16f52914357dc474eb1d8d965cfac60

ReactAndroid/src/main/java/com/facebook/react/modules/network/OkHttpClientProvider.java

@@ -32,7 +32,6 @@ public class OkHttpClientProvider {
   }
 
   private static OkHttpClient createClient() {
-    // TODO: #7108751 plug in stetho
     OkHttpClient client = new OkHttpClient();
 
     // No timeouts by default

ReactAndroid/src/main/third-party/java/stetho/BUCK

@@ -1,23 +0,0 @@
-prebuilt_jar(
-    name = 'stetho',
-    binary_jar = ':stetho-binary-jar',
-    visibility = ['//ReactAndroid/...',],
-)
-
-remote_file(
-    name = 'stetho-binary-jar',
-    url = 'mvn:com.facebook.stetho:stetho:jar:1.2.0',
-    sha1 = '1d6cdb8ce8185b8b23213fad48a83987fb6d2d67',
-)
-
-prebuilt_jar(
-    name = 'stetho-okhttp',
-    binary_jar = ':stetho-okhttp-binary-jar',
-    visibility = ['//ReactAndroid/...',],
-)
-
-remote_file(
-    name = 'stetho-okhttp-binary-jar',
-    url = 'mvn:com.facebook.stetho:stetho-okhttp:jar:1.2.0',
-    sha1 = '6c5c9380e245c4ff5be2b2a49dcbb0200c39798e',
-)

local-cli/generator-android/templates/src/app/proguard-rules.pro

@@ -61,7 +61,3 @@
 -dontwarn java.nio.file.*
 -dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
 -dontwarn okio.**
-
-# stetho
-
--dontwarn com.facebook.stetho.**