UI: Match System Time is now an active setting which you can toggle on/off.

src/Ryujinx/UI/Views/Settings/SettingsSystemView.axaml.cs

@@ -35,7 +35,5 @@ namespace Ryujinx.Ava.UI.Views.Settings
                 ViewModel.ValidateAndSetTimeZone(timeZone.Location);
             }
         }
-
-        private void MatchSystemTime_OnClick(object sender, RoutedEventArgs e) => ViewModel.MatchSystemTime();
     }
 }