layershellv1window: don't destroy the window twice

Outputs get disabled before they get destroyed, so destroying the window
when the output gets disabled and when it gets destroyed causes the window
to be destroyed twice and run into an assert

src/layershellv1window.cpp

@@ -58,8 +58,6 @@ LayerShellV1Window::LayerShellV1Window(LayerSurfaceV1Interface *shellSurface,
             this, &LayerShellV1Window::scheduleRearrange);
     connect(output, &Output::enabledChanged,
             this, &LayerShellV1Window::handleOutputEnabledChanged);
-    connect(output, &Output::destroyed,
-            this, &LayerShellV1Window::handleOutputDestroyed);
 
     connect(shellSurface->surface(), &SurfaceInterface::sizeChanged,
             this, &LayerShellV1Window::handleSizeChanged);
@@ -180,6 +178,7 @@ void LayerShellV1Window::destroyWindow()
     }
     m_shellSurface->disconnect(this);
     m_shellSurface->surface()->disconnect(this);
+    m_desiredOutput->disconnect(this);
 
     markAsDeleted();
     cleanTabBox();
@@ -279,12 +278,6 @@ void LayerShellV1Window::handleOutputEnabledChanged()
     }
 }
 
-void LayerShellV1Window::handleOutputDestroyed()
-{
-    closeWindow();
-    destroyWindow();
-}
-
 void LayerShellV1Window::setVirtualKeyboardGeometry(const QRectF &geo)
 {
     if (m_virtualKeyboardGeometry == geo) {

src/layershellv1window.h

@@ -60,7 +60,6 @@ private:
     void handleCommitted();
     void handleAcceptsFocusChanged();
     void handleOutputEnabledChanged();
-    void handleOutputDestroyed();
     void scheduleRearrange();
     void activateScreenEdge();
     void deactivateScreenEdge();