Delete the document by using the signed_id.
The document will be completely removed from our servers and cannot be accessible forever. Use the download API before deleting incase you wish to have a copy of the same.
If user doesn't have access to a particular file, a 401 is returned
If a file with the id is not present, a 401 is returned as the API assumes the user is trying to delete a file that he doesn't have access to.