Fixed duplicate QMoveEvent generated for each QWidget::move call

Removed QMoveEvent generating code from QWidgetPrivate::setGeometry_sys
for widgets with native window handles. A move event is already
generated for them by QGuiApplicationPrivate::processGeometryChangeEvent.

Task-number: QTBUG-32590
Change-Id: I73313a012851516047ac017f1e15a21774d8ffe2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>