'Modify a specific tag key
:param tag_key: The tag key you want to remove (required)
:type  tag_key: :class:`DimensionDataTagKey` or ``str``
:rtype: ``bool``'

def ex_remove_tag_key(self, tag_key):

    tag_key_id = self._tag_key_to_tag_key_id(tag_key)
    remove_tag_key = ET.Element('deleteTagKey', {'xmlns': TYPES_URN, 'id': tag_key_id})
    response = self.connection.request_with_orgId_api_2('tag/deleteTagKey', method='POST', data=ET.tostring(remove_tag_key)).object
    response_code = findtext(response, 'responseCode', TYPES_URN)
    return (response_code in ['IN_PROGRESS', 'OK'])
