How can I programmatically delete a custom menu? I'm writing a hook_deploy_N that moves a bunch of menu items from a deprecated custom menu to some newer ones. So far, so good. After moving the items, I want to delete the old menu, but can't figure out how. \Drupal\Core\Menu\MenuTreeStorage has a delete function that may be  what I'm looking for, but the \Drupal\Core\Menu\MenuTreeStorage object is housed inside the \Drupal\Core\Menu\MenuLinkTree, which I can at least load, but has protected status, and I don't see a way to get to it. Plus, I'm not not 100% convinced that's what I want any way.
Since menus are configuration items, my poking into \Drupal\Core\Menu\MenuTreeStorage::delete() was wrong. You delete a custom menu thusly:

\Drupal::configFactory()-&gt;getEditable('system.menu.name-of-custom-menu')-&gt;delete();


Note that I'm assuming the menu is empty. I don't know what would happen if you deleted a menu that had menu items in it, whether they'd be orphaned or deleted.