Of Course I don't think you should that but it's all your decision. I goes back in my gallery and man do I feel embarrassed! Haha! But to keep in mind that you are improving is most important. Heck, I'm pretty sure you were proud of them when you did them. I was of my old stuff but now, Uhff. Even other greater artists and writers says the same.
But you are not embarrassed by spelling or grammar? But the fact it is smuts, right?
I would leave them there but not write any more.
But as I said, it's you choice.