code: def delete_multifactor(self, id, provider):
          
          url = self._url('{}/multifactor/{}'.format(id, provider))
          return self.client.delete(url)
docs: Delete a user's multifactor provider.
  
          Args:
              id (str): The user's id.
  
              provider (str): The multifactor provider. Supported values 'duo'
                  or 'google-authenticator'
  
          See: https://auth0.com/docs/api/management/v2#!/Users/delete_multifactor_by_provider