Merge pull request #1730 from friederbluemle/update-android-gitignore

Revert "Ignoring build folder inside app module in Android projects"

Android.gitignore

@@ -15,7 +15,6 @@ gen/
 # Gradle files
 .gradle/
 build/
-*/build/
 
 # Local configuration file (sdk path, etc)
 local.properties