6.5

app/build.gradle

 apply plugin: 'com.android.application'
-apply plugin: 'com.google.gms.google-services'
 android {
 
     compileSdkVersion 25
@@ -49,11 +48,6 @@ android {
             outputFileName = "./${variant.versionName}/${variant.applicationId}_${variant.versionCode}_${formattedDate}.apk"
         }
     }
-
-    configurations {
-        all*.exclude group: 'com.google.firebase', module: 'firebase-core'
-        all*.exclude group: 'com.google.firebase', module: 'firebase-iid'
-    }
 }
 dependencies {
     compile 'com.squareup.okhttp3:okhttp:3.10.0'