Drop now defunct code to sync resizes

This code was designed to make sure we didn't commit new buffers whilst
we were waiting for a configure. The way this worked failed in 6 after
kwin does not reply to desired_size changes immediately.

It is uneeded after kwin commit "wayland: Avoid rearranging layer
surfaces when wl_surface size changes" which means if we do submit
frames between size change requests, they'll be ignored. Meaning the
client will eventually get a configure event at the right size.

src/qwaylandlayersurface.cpp

@@ -71,9 +71,6 @@ QWaylandLayerSurface::QWaylandLayerSurface(QWaylandLayerShellIntegration *shell,
 
 QWaylandLayerSurface::~QWaylandLayerSurface()
 {
-    if (m_waitForSyncCallback) {
-        wl_callback_destroy(m_waitForSyncCallback);
-    }
     destroy();
 }
 
@@ -173,7 +170,6 @@ void QWaylandLayerSurface::setWindowGeometry(const QRect &geometry)
     }
 
     setDesiredSize(geometry.size());
-    requestWaylandSync();
 }
 
 bool QWaylandLayerSurface::requestActivate()
@@ -224,34 +220,6 @@ void QWaylandLayerSurface::requestXdgActivationToken(quint32 serial)
     connect(tokenProvider, &QWaylandXdgActivationTokenV1::done, tokenProvider, &QObject::deleteLater);
 }
 
-const wl_callback_listener QWaylandLayerSurface::syncCallbackListener = {
-    .done = [](void *data, struct wl_callback *callback, uint32_t time){
-        Q_UNUSED(time);
-        wl_callback_destroy(callback);
-        QWaylandLayerSurface *layerSurface = static_cast<QWaylandLayerSurface *>(data);
-        layerSurface->m_waitForSyncCallback = nullptr;
-        layerSurface->sendExpose();
-    }
-};
-
-void QWaylandLayerSurface::requestWaylandSync()
-{
-    if (m_waitForSyncCallback) {
-        return;
-    }
-
-    m_waitForSyncCallback = wl_display_sync(m_window->display()->wl_display());
-    wl_callback_add_listener(m_waitForSyncCallback, &syncCallbackListener, this);
-}
-
-void QWaylandLayerSurface::handleWaylandSyncDone()
-{
-    if (!window()->isExposed()) {
-        return;
-    }
-    sendExpose();
-}
-
 void QWaylandLayerSurface::sendExpose()
 {
 #if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)

src/qwaylandlayersurface_p.h

@@ -30,7 +30,7 @@ public:
 
     bool isExposed() const override
     {
-        return m_configured && !m_waitForSyncCallback;
+        return m_configured;
     }
     void attachPopup(QtWaylandClient::QWaylandShellSurface *popup) override;
 
@@ -50,8 +50,6 @@ public:
     void requestXdgActivationToken(quint32 serial) override;
 
 private:
-    void requestWaylandSync();
-    void handleWaylandSyncDone();
     void sendExpose();
     void zwlr_layer_surface_v1_configure(uint32_t serial, uint32_t width, uint32_t height) override;
     void zwlr_layer_surface_v1_closed() override;
@@ -64,9 +62,6 @@ private:
 
     bool m_configured = false;
     bool m_configuring = false;
-
-    static const wl_callback_listener syncCallbackListener;
-    struct wl_callback *m_waitForSyncCallback = nullptr;
 };
 
 }