[#1916] Remove unused imports

Author: jossiwolf

auth/src/main/java/com/firebase/ui/auth/FirebaseAuthUIActivityResultContract.java

@@ -3,8 +3,6 @@
 import android.content.Context;
 import android.content.Intent;
 
-import com.firebase.ui.auth.AuthUI;
-import com.firebase.ui.auth.IdpResponse;
 import com.firebase.ui.auth.data.model.FirebaseAuthUIAuthenticationResult;
 
 import androidx.activity.result.contract.ActivityResultContract;