refactor: Remove duplicated imports

lib/main.dart

@@ -22,7 +22,6 @@ import 'config/themes.dart';
 import 'utils/background_push.dart';
 import 'utils/custom_scroll_behaviour.dart';
 import 'utils/localized_exception_extension.dart';
-import 'utils/platform_infos.dart';
 import 'widgets/lock_screen.dart';
 import 'widgets/matrix.dart';
 

lib/pages/settings/settings_view.dart

@@ -6,7 +6,6 @@ import 'package:vrouter/vrouter.dart';
 
 import 'package:fluffychat/config/app_config.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
-import '../../config/app_config.dart';
 import '../../widgets/content_banner.dart';
 import 'settings.dart';
 

lib/widgets/matrix.dart

@@ -33,7 +33,6 @@ import '../pages/key_verification/key_verification_dialog.dart';
 import '../utils/account_bundles.dart';
 import '../utils/background_push.dart';
 import '../utils/famedlysdk_store.dart';
-import '../utils/platform_infos.dart';
 import 'local_notifications_extension.dart';
 
 // import 'package:flutter_secure_storage/flutter_secure_storage.dart';