view menu tab cannot be removed

I have created a view with a page and a block.
I have activated to create a menu tab from that page (on the view), the menu tab appears.
I wanted to remove the menu, so I selected no menu or none on the page (in the view), but the menu tab (main menu) stayed.
I logged in, out, restarted and flushed the cache, but the menu tab stayed.
I finally removed the page (in the view) that got rid of the menu.