Removed module names from #include directives.

Getting the #include directives ready for Qt5. This includes the
new-project wizards.

Change-Id: Ia9261f1e8faec06b9285b694d2b7e9a095978d2b
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/libs/utils/treewidgetcolumnstretcher.cpp

@@ -31,9 +31,9 @@
 **************************************************************************/
 
 #include "treewidgetcolumnstretcher.h"
-#include <QtGui/QTreeWidget>
-#include <QtGui/QHideEvent>
-#include <QtGui/QHeaderView>
+#include <QTreeWidget>
+#include <QHideEvent>
+#include <QHeaderView>
 
 using namespace Utils;