Delete commented line

Change-Id: Ia67e7f0de8dd99b8188f6fe8e3611ef6c8e69f9f

Author: samtstern

app/src/main/java/com/firebase/uidemo/auth/AnonymousUpgradeActivity.java

@@ -83,7 +83,6 @@ public void startAuthUI() {
         Intent intent = AuthUI.getInstance().createSignInIntentBuilder()
             .setLogo(R.drawable.firebase_auth_120dp)
             .setAvailableProviders(providers)
-//            .setIsSmartLockEnabled(false)
             .enableAnonymousUsersAutoUpgrade()
             .build();
         startActivityForResult(intent, RC_SIGN_IN);