I would just leave them period considering it won't matter if the light can't reach the leaves underneath. The plant will just suck up what it can out of it and then it will die. Then either it will just fall off itself, or when the majority of it looks crispy, just poke it lightly and it should just fall off. If you cut it or remove it any other way it'll just stress the plant.

It may seem like something so small that wouldn't effect the plant, but every little bit counts in getting the best results. immitate nature!