Remove warnings

(cherry picked from commit 9625c564877414695a9706acf34bc8719018ef06)

src/gui/kernel/qplatformintegration_qpa.cpp

@@ -214,6 +214,7 @@ QPlatformNativeInterface * QPlatformIntegration::nativeInterface() const
 
 bool QPlatformIntegration::hasCapability(Capability cap) const
 {
+    Q_UNUSED(cap);
     return false;
 }
 

src/gui/kernel/qplatformwindow_qpa.cpp

@@ -150,7 +150,7 @@ void QPlatformWindow::setParent(const QPlatformWindow *parent)
 /*!
   Reimplement to set the window title to \a title
 */
-void QPlatformWindow::setWindowTitle(const QString &title) {}
+void QPlatformWindow::setWindowTitle(const QString &) {}
 
 /*!
   Reimplement to be able to let Qt rais windows to the top of the desktop

src/plugins/platforms/wayland/qwaylandwindow.cpp

@@ -146,6 +146,7 @@ void QWaylandWindow::newSurfaceCreated()
 void QWaylandWindow::frameCallback(struct wl_surface *surface, void *data, uint32_t time)
 {
     Q_UNUSED(time);
+    Q_UNUSED(surface);
     QWaylandWindow *self = static_cast<QWaylandWindow*>(data);
     self->mWaitingForFrameSync = false;
 }