Bumper blocks???

[NIOstyle]

My first mod was putting the clear side markers to make it look euro-style. My next is removing the license plate in the front. But I have a question. I removed the license plate and it's holder but there are two square bumper blocks which when I look in the middle it looks like the end of a bolt. I hate to ruin the blocks because the law in my state says that all vehicles should have a front license plate, so if I need to I'd like to put the license plate back on.

Any ideas or experience in removing these little things?

Thanks,