qt: do not try to restore window geometry after exiting full-screen

On X11, Wayland, Windows the window itself restores the old geometry
when it is no longer fullscreen. There is no need to manually restore
the geometry, and it causes issues on certain platforms such as Wayland
where clients do not have authority on window placement with xdg-shell.

modules/gui/qt/maininterface/video_window_handler.cpp

@@ -119,8 +119,6 @@ void VideoWindowHandler::setVideoFullScreen( bool fs )
     m_videoFullScreen = fs;
     if( fs )
     {
-        m_lastWinGeometry = m_window->geometry();
-
         int numscreen = var_InheritInteger( m_intf, "qt-fullscreen-screennumber" );
 
         auto screenList = QApplication::screens();
@@ -141,15 +139,10 @@ void VideoWindowHandler::setVideoFullScreen( bool fs )
     }
     else
     {
-        bool hold = WindowStateHolder::holdFullscreen(m_window,  WindowStateHolder::VIDEO, false);
+        WindowStateHolder::holdFullscreen(m_window,  WindowStateHolder::VIDEO, false);
 
         if( m_lastWinScreen != NULL && !m_hasWayland )
             m_window->setScreen(m_lastWinScreen);
-        if( !hold && m_lastWinGeometry.isNull() == false )
-        {
-            m_window->setGeometry( m_lastWinGeometry );
-            m_lastWinGeometry = QRect();
-        }
     }
 }
 

modules/gui/qt/maininterface/video_window_handler.hpp

@@ -65,7 +65,6 @@ protected slots:
     bool m_videoFullScreen = false;
     bool m_autoresize = false;
 
-    QRect   m_lastWinGeometry;
     QScreen* m_lastWinScreen = nullptr;
 
     bool m_hasWayland = false;