You are right. Internal posts are not used and they need to be removed. I removed them all. I do it with pliers. They are not screwed. They are just pushed into screen’s PCB and glued/soldered. Remove them with pliers as you would if you would remove somebodies tooth. Wiggle little bit left and right and then get it out trying to protect the surface of PCB as much as possible. There is no important traces around the posts. Please do not take this wrong way. I don’t imagine that you are dentist or a weird person 
I have just recorded quick video how to do that