Go to the Website Content menu, under 'Website Layout' click on Menus link. Open 'Menus' page. Locate the menu you wish to delete using Filter options and click on at the end of its row. Confirm you wish to delete this menu in a pop-up window.
A menu comprises of menu items, which are links to webpages, forms, and urls. These 3 elements are affected differently by the deletion of their leading menu unless you attach them to another menu.
On the deletion of a menu, pages and forms attached to it disappear from website navigation but continue to exist in
External links, however, get erased together with the menu they were placed in.