I think it's time to ban a friend of mine from our social group.
Oh, my. Why do you want to ban him?
He never shows up in time and it's very annoying when he does so.
You do not need to ban your friend from the social group. You can go to him personally and tell him you would appreciate it if he could show up on time for things.
Nah. I'm going to do it to make my life easy and because he annoys me.
I think it would go better if you confront him first. He may not realize this is a big deal to you and improve his behavior.