I think I clitorectomied my daughter and I do not regret it
Are you joking right now? Why would you possibly do that to your own daughter?
Because her boobs are too big, does that mean she should be allowed to do things that guys should be allowed to?
Depending on the age of your child, you could be subject to child abuse charges for damaging your child. If she chooses to have sexual relations, that's her business, and not yours.
I'm going to treat her like a guy and not allow her to get breast, then she'll hate it too.
You need to seek professional help for this. Your daughter will suffer if you intent to go down this path. If you truly love her you'll get help.