Delete the list
Discard lists that are no longer needed
If the active list is no longer needed, consider deleting it to save space and reduce clutter.
You can delete any lists that you've created. You can also delete lists that are shared with you, providing that you're included in its Editors list. Admins can remove any list they want!
To delete the list, open the List Menu in the toolbar (top-right), choose Delete list and answer Yes to the confirmation.
Caution
Deletions can't be undone, so please think carefully before doing so!