Redis remove slave from replication along with sentinel

I have a 3-nodes Redis replication and a 3-nodes Sentinel. I want to remove one slave.

I tried stop slave and remove slaveof 10.128.130.139 6379 from configuration. But it became slave again after I started it. And slaveof was back again in config.

After reading SLAVEOF, I tried invoking SLAVEOF NO ONE. But it became slave again after 1 min.

I guess Sentinel reconfig it to slave. How can I remove one slave in my case where Sentinel exists?