qt: systray: fix systray call for macos

    CXX      dialogs/systray/libqt_plugin_la-systray.lo
    ../../../../modules/gui/qt/dialogs/systray/systray.cpp:101:21: error: no member named 'updateSystrayMenu' in 'VLCMenuBar'
            VLCMenuBar::updateSystrayMenu( this, p_intf );
            ~~~~~~~~~~~~^
    ../../../../modules/gui/qt/dialogs/systray/systray.cpp:101:46: error: use of undeclared identifier 'p_intf'
            VLCMenuBar::updateSystrayMenu( this, p_intf );
                                                 ^

modules/gui/qt/dialogs/systray/systray.cpp

@@ -97,11 +97,7 @@ void VLCSystray::handleClick(
     {
     case QSystemTrayIcon::Trigger:
     case QSystemTrayIcon::DoubleClick:
-#ifdef Q_OS_MAC
-        VLCMenuBar::updateSystrayMenu( this, p_intf );
-#else
         toggleUpdateMenu();
-#endif
         break;
     case QSystemTrayIcon::MiddleClick:
         if (PlaylistController* const playlistController = m_intf->p_mainPlaylistController)