Clean up build.gradle
Clean up build.gradle

Change-Id: Id263db395b4f2a86f957ca6267321c452576d80d

samtstern/quickstart-android,firebase/quickstart-android,firebase/quickstart-android,firebase/quickstart-android,hbmartin/sub9-client,AJHill37/LFG,firebase/quickstart-android,firebase/quickstart-android,firebase/quickstart-android,AJHill37/LFG,samtstern/quickstart-android,AJHill37/LFG,hbmartin/sub9-client,samtstern/quickstart-android