Only the primary on the account can add or remove user's access to an account
        :param account_id: int of the account_id for the account
        :param user_id:    int of the user_id to grant access
        :return:           Access dict

def delete(self, account_id, user_id):
        """ Only the primary on the account can add or remove user's access to an account
        :param account_id: int of the account_id for the account
        :param user_id:    int of the user_id to grant access
        :return:           Access dict
        """
        return self.connection.delete('account/access', account_id=account_id, user_id=user_id)