'Delete vlan batch.'

def delete_vlan_batch(self, vlan_list):

    if (not vlan_list):
        return
    vlan_bitmap = self.vlan_list_to_bitmap(vlan_list)
    xmlstr = (CE_NC_DELETE_VLAN_BATCH % (vlan_bitmap, vlan_bitmap))
    recv_xml = execute_nc_action(self.module, xmlstr)
    self.check_response(recv_xml, 'DELETE_VLAN_BATCH')
    self.updates_cmd.append(('undo    vlan    batch    %s' % self.vlan_range.replace(',', '    ').replace('-', '    to    ')))
    self.changed = True
