I'm essentially ghosting my friends
Aren't you hurting your friends if you ghost them?
I don't care. I'm going to drop them and they can figure it out and also learn how to deal with it by themselves
It sounds like you've grown apart from your friends, but you shouldn't just stop talking to them with no explanation. Talk to them and tell them why you are ending the relationship.
I don't want to create drama, it's too much effort to keep in touch
Then let that friendship die a slow death.