remove debug code

example/lib/main.dart

@@ -28,7 +28,6 @@ void main() async {
     showLocalNotification:
         (!kIsWeb && Platform.isAndroid) ? showLocalNotification : null,
     persistenceEnabled: true,
-    backgroundKeepAlive: Duration(seconds: 3),
   );
 
   if (userId != null) {

example/pubspec.yaml

@@ -1,6 +1,6 @@
 name: example
 description: A new Flutter project.
-version: 1.0.84+86
+version: 1.0.85+87
 
 environment:
   sdk: ">=2.2.2 <3.0.0"