revert gms upgrade

build.gradle

@@ -15,7 +15,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.1.0'
-        classpath 'com.google.gms:google-services:3.1.2'
+        classpath 'com.google.gms:google-services:3.0.0'
     }
 }