Bug 73729 [Workbench] [Mac] Dual preferences menu items
On Mac OS X, the preferences menu item appears in the Eclipse menu. This is correct. However, the same menu item that does the same thing also appears in the Window menu, which is correct on other platforms but not the Mac. It should be removed from the Window menu.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
buildWorkingSetMenu = null;
        quickStartAction = null;
        tipsAndTricksAction = null;
        showInQuickMenu = null;
        newQuickMenu = null;
        addBookmarkAction = null;
        addTaskAction = null;
        buildProjectAction = null;
        openProjectAction = null;
        closeProjectAction = null;
        newWizardMenu = null;
        pinEditorContributionItem = null;
        statusLineItem = null;
        prefListener = null;
        propPrefListener = null;
        introAction = null;
        
        super.dispose();
    }
    void updateModeLine(final String text) {
        statusLineItem.setText(text);
    }
    /**
     * Returns true if the menu with the given ID should
     * be considered as an OLE container menu. Container menus
     * are preserved in OLE menu merging.
     */
    public boolean isApplicationMenu(String menuId) {
        if (menuId.equals(IWorkbenchActionConstants.M_FILE)) {
			return true;