update style

lib/utils/QlNavigatorObserver.dart

@@ -1,16 +0,0 @@
-import 'package:flutter/cupertino.dart';
-import 'package:qinglong_app/base/routes.dart';
-
-class QlNavigatorObserver extends NavigatorObserver {
-  bool isInLoginPage = false;
-
-  @override
-  void didPush(Route route, Route? previousRoute) {
-    super.didPush(route, previousRoute);
-    if (Routes.routeLogin == route.settings.name) {
-      isInLoginPage = true;
-    } else {
-      isInLoginPage = false;
-    }
-  }
-}