Bug 53098 [KeyBindings] KeyBinding service must bind (DEL) key to ActionFactory.DELETE
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
IWorkbenchPage workbenchPage = workbenchWindow.getActivePage();
					
					if (workbenchPage != null) {					
						IWorkbenchPageContextSupport workbenchPageContextSupport = (IWorkbenchPageContextSupport) workbenchPage.getContextSupport();
						workbenchPageContextSupport.getCompoundContextActivationService().removeContextActivationService(contextActivationServiceB);
					}
				}
			}
		});
		
		IHandler handlerA = new IHandler() {
			public void execute() {
			}
			
			public void execute(Event event) {
			}
			
			public boolean isEnabled() {
				return false;
			}
		};
		
		IHandler handlerB = new IHandler() {
			public void execute() {
			}
			
			public void execute(Event event) {
			}
			
			public boolean isEnabled() {