How do I delete screenshot images?

Hi I have a curiosity, when I make a screenshot in a sprite, where is the image placed? I mean if I destroy the sprite and then recreate it will the image still be there, will taking so many screenshots in one game increase the size of the saved game? Is there a way to delete the image so that the recreated sprite goes back to being imageless?

I think it is being replaced.

If I have multiple sprites with 100 frames and each one has a different stamp, I don't think anything is overwritten.

So if I wanted to delete some frames how should I do?