parameters: (cls, user_id, token)
docstring: Deletes a given authorization token.
  
          :param user_id:
              User unique ID.
          :param token:
              A string with the authorization token.
docstring_summary: Deletes a given authorization token.
docstring_tokens: Deletes a given authorization token .
function: def delete_auth_token(cls, user_id, token):
          """Deletes a given authorization token.
  
          :param user_id:
              User unique ID.
          :param token:
              A string with the authorization token.
          """
          cls.token_model.get_key(user_id, 'auth', token).delete()
function_tokens: def delete_auth_token ( cls , user_id , token ) : cls . token_model . get_key ( user_id , 'auth' , token ) . delete ( )