Delete user. 
            
            @return (bool) - Boolean indicating whether UsersDelete was successful.

def UsersDelete (self, user_id):
        """
            Delete user. 
            
            @return (bool) - Boolean indicating whether UsersDelete was successful.
        """
        if self.__SenseApiCall__('/users/{user_id}.json'.format(user_id = user_id), 'DELETE'):
            return True
        else:
            self.__error__ = "api call unsuccessful"
            return False