How do I delete old presets?

[CameoAppearance]

I have around four presets that I created when I was learning the game and no longer want to use; this is partly because I don't need the help now, partly because increasing the amount of beefalo makes the earlyish game easier but they get overpopulated much faster and become a problem by day 100, and partly because I didn't have Reign of Giants then so starting in summer makes them unusable deathtraps. How do I get rid of them? Is there a console command like the one for purging the morgue? I'd like to unclog my presets menu.

[Mobbstar]

You cannot delete presets, but overwrite them when making your sixth one.

That said, there's a preset manager mod you probably should look into.