Bug 12449 delete action in type hierarchy is not registered on 'del' key
TypeHierarchyViewPart should call ReorgGroup.createDeleteAction see PackageExplorerViewPart
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
private IProblemChangedListener fHierarchyProblemListener;
	
	private TypeHierarchyLifeCycle fHierarchyLifeCycle;
	private ITypeHierarchyLifeCycleListener fTypeHierarchyLifeCycleListener;
		
	private MethodsViewer fMethodsViewer;
			
	private int fCurrentViewerIndex;
	private TypeHierarchyViewer[] fAllViewers;
	
	private SelectionProviderMediator fSelectionProviderMediator;
	private ISelectionChangedListener fSelectionChangedListener;
	
	private boolean fIsEnableMemberFilter;
	
	private SashForm fTypeMethodsSplitter;
	private PageBook fViewerbook;
	private PageBook fPagebook;
	
	private Label fNoHierarchyShownLabel;
	private Label fEmptyTypesViewer;
	
	private ViewForm fTypeViewerViewForm;
	private ViewForm fMethodViewerViewForm;
	
	private CLabel fMethodViewerPaneLabel;
	private JavaUILabelProvider fPaneLabelProvider;
	
	private IDialogSettings fDialogSettings;