'Remove storage from a node
:param  node: The server to add storage to
:type   node: :class:`Node`
:param  disk_id: The ID of the disk to remove
:type   disk_id: ``str``
:rtype: ``bool``'

def ex_remove_storage(self, disk_id):

    remove_disk = ET.Element('removeDisk', {'xmlns': TYPES_URN})
    remove_disk.set('id', disk_id)
    result = self.connection.request_with_orgId_api_2('server/removeDisk', method='POST', data=ET.tostring(remove_disk)).object
    response_code = findtext(result, 'responseCode', TYPES_URN)
    return (response_code in ['IN_PROGRESS', 'OK'])
