style: format and cleanup

Author: fulleni

lib/app/view/app.dart

@@ -1,7 +1,6 @@
 import 'package:auth_repository/auth_repository.dart';
 import 'package:core/core.dart' hide AppStatus;
 import 'package:data_repository/data_repository.dart';
-import 'package:flex_color_scheme/flex_color_scheme.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_news_app_mobile_client_full_source_code/ads/ad_service.dart';