'delete virtual ip info'

def delete_virtual_ip(self):

    if self.is_virtual_ip_exist():
        conf_str = (CE_NC_DELETE_VRRP_VIRTUAL_IP_INFO % (self.vrid, self.interface, self.virtual_ip))
        recv_xml = set_nc_config(self.module, conf_str)
        if ('<ok/>' not in recv_xml):
            self.module.fail_json(msg='Error:    delete    virtual    ip    info    failed.')
        self.updates_cmd.append(('interface    %s' % self.interface))
        self.updates_cmd.append(('undo    vrrp    vrid    %s    virtual-ip    %s    ' % (self.vrid, self.virtual_ip)))
        self.changed = True
