title: Could be possible remove Fabric apiKey from a migration from Fabric to Firebase Crashlytics?
body: <p>I got an android app where Fabric Crashytics is installed. I've followed the official guide of Firebase to migrate from Fabric to Firebase.The migration works correctly and I see all the reports in Fabric and Firebase console. </p>
  
  <p>The problem is that if I want remove the Fabric apikey from manifest.xml because I don't want to see the crash on Fabric, only on Firebase console. If I remove the apikey how I said before the crashes doesn't appear at Firebase console.</p>
  
  <p>I see other questions and at the moment to set up the Crashlytics SDK on Firebase console, I choose that the app was an existing Crashlytics app.</p>
  
  <p>I have other question, when the migration ends Fabric reports will be disappear? and the Fabric apikey would be deprecated also?</p>