How do I delete a (non-resident) state tax return?

There's an answer that says I *can't* delete a state tax return if I've already paid for it. In my case, I paid $0 for it, because the state returns were free in whatever version of TurboTax I have. But I need to delete it, because I was trying out a non-resident form, and it turns out I don't need to file in that state, after all.