S5560，irf成员编号怎么删除

两台S5560做堆叠，本来只要一台设备irf member 2 renumber 1就行，现在两台设备都编号了，用命令行把其中一台设备配置全部删除，重启之后还是会出现irf member 2 priority 1，interface GigabitEthernet2/0/1这个怎么才能恢复出厂设置，一定要reset键吗？

<H3C>reset saved-configuration

The saved configuration file will be erased. Are you sure? [Y/N]:y

Configuration file in flash: is being cleared.

Please wait ...

MainBoard:

Configuration file is cleared.

<H3C>reboot

Start to check configuration with next startup configuration file, please wait.........DONE!

Current configuration may be lost after the reboot, save current configuration? [Y/N]:n

This command will reboot the device. Continue? [Y/N]:y

<H3C>dis cu

 sysname  H3C

 irf mac-address persistent timer

 irf auto-update enable

 undo irf link-delay

 irf member 2 priority 1

interface GigabitEthernet2/0/1

 port link-mode bridge

 combo enable fiber