opt: appbar theme

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

lib/pages/video/detail/widgets/app_bar.dart

@@ -33,8 +33,6 @@ class ScrollAppBar extends StatelessWidget {
           padding: EdgeInsets.only(top: statusBarHeight),
           child: AppBar(
             primary: false,
-            elevation: 0,
-            scrolledUnderElevation: 0,
             centerTitle: true,
             title: TextButton(
               onPressed: () => callback(),