去掉eclipse下的菜单

WorkbenchWindow window = (WorkbenchWindow)PlatformUI.getWorkbench().getActiveWorkbenchWindow();PerspectiveBarManager barManager = window.getPerspectiveBar();CoolBarManager manager = window.getCoolBarManager();//manager.removeAll();MenuManager manager2 = window.getMenuBarManager();//manager2.removeAll();IContributionItem[] contributionItems = manager2.getItems();for(IContributionItem item : contributionItems) {	System.out.println(item.getId());}manager2.remove("help");manager.update(true);manager2.update(true);