On the menu bar in the main window, click on the menu you want to delete a command
from.
If the menu you want to delete a command from is not displayed, select
the Menu tab in the Customize dialogue
box and select the menu you want to view from the Show menus for
combo box.
Right-click on the menu command you want to delete.
Click on the Delete context menu item.
Click Close on the Customize dialogue box to return to
text editing mode.