'Delete the masking view.
Delete the masking view if the volume is the last one in the
storage group.
:param serial_number: the array serial number
:param masking_view: masking view name'

def _last_volume_delete_masking_view(self, serial_number, masking_view):

    LOG.debug('Last    volume    in    the    storage    group,    deleting    masking    view    %(maskingview_name)s.', {'maskingview_name': masking_view})
    self.rest.delete_masking_view(serial_number, masking_view)
    LOG.info('Masking    view    %(maskingview)s    successfully    deleted.', {'maskingview': masking_view})
