chore: code clean up

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/main/controller.dart

@@ -25,7 +25,6 @@ class MainController extends GetxController {
   final StreamController<bool> bottomBarStream =
       StreamController<bool>.broadcast();
   Box setting = GStorage.setting;
-  DateTime? _lastPressedAt;
   late bool hideTabBar;
   late PageController pageController;
   int selectedIndex = 0;