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

def ex_remove_storage_from_node(self, node, scsi_id):

    disk = [disk for disk in node.extra['disks'] if (disk.scsi_id == scsi_id)][0]
    return self.ex_remove_storage(disk.id)
