I don't want a friend to join in on a hangout
Is there a good reason to exclude them from the hangout?
Well I heard he is not my friend anymore and it's better without him.
It makes sense that you wouldn't want to always hang out with every friend that you have. As long as you try to include them the next time then you aren't doing anything wrong. Have you talked to them about this?
I don't care since they aren't my friends.
Are you sure that you are not friends anymore? I get that you do not always want to spend time with friends, but you should make sure that you spend time with them at some point.