Unfriending

The Roblox age thingy put me as 14 while I'm 15 which is annoying cus I need to wait one more year before being able to talk to most people, and I'm not showing my id. But I want to remove all my friends cus I don't talk to most anyway AND the ones I do talk to aren't in my age slot cus they cheated the system and I didn't succeed.