title: How to disable Firebase completely? warnings and errors shown in log
body: <p>I'm disabling analytics on my project deleting the .json file and deleting this from app gradle file:</p>
  <pre><code>apply plugin: 'com.google.gms.google-services'
  </code></pre>
  <p>And also deleting all the push or analytics init calls.</p>
  <p>Also, I'm adding this on manifest:</p>
  <pre><code>&lt;meta-data android:name=&quot;firebase_analytics_collection_deactivated&quot; android:value=&quot;true&quot;/&gt;
  </code></pre>
  <p>Even I deleted the two notifications services from the manifst (<code>MESSAGING_EVENT</code> and <code>INSTANCE_ID_EVENT</code>)</p>
  <p>But after doing that, I'm getting this error warning every time I open a section:</p>
  <pre><code>02-26 13:05:15.687 10605-10605/? I/FirebaseInitProvider: FirebaseApp initialization unsuccessful
  02-26 13:05:20.574 10605-10743/? I/FA: To enable faster debug mode event logging run:
                                           adb shell setprop debug.firebase.analytics.app com.mypackage.myapp
  02-26 13:05:20.578 10605-10743/? E/FA: Missing google_app_id. Firebase Analytics disabled.
  </code></pre>
  <p>What more should I do to completely disable Firebase without removing the Gradle compile files?</p>