cleanup

GUI/View/SampleDesigner/SampleEditorController.h

@@ -17,7 +17,6 @@
 
 #include "GUI/Model/Sample/FormFactorItemCatalog.h"
 #include "GUI/Model/Sample/ItemWithParticlesCatalog.h"
-#include <QUndoStack>
 
 class CompoundItem;
 class CoreAndShellForm;
@@ -134,7 +133,6 @@ private:
     ItemWithParticles* createAndInitItem(ItemWithParticlesCatalog::Type itemType) const;
 
 private:
-    QUndoStack m_undoStack;
     SampleItem* m_sampleItem;
     SampleForm* m_sampleForm;
     ProjectDocument* m_document;