some kind of censored version where she doesn't, you know, stab herself in the vagina.

If only! No, same old same old. If anything, there was slightly more disturbing content from my POV, because it was the re-edit where they extend the hospital/testing sequences (which I find excruciating) and added the conversation on the stairs between Karras and Merrin back in, which posits that the purpose of possession is to damage the souls of the people around the possessee, thus rendering the possessee's suffering utterly dismissable. But most of that stuff was lost on the audience I saw it with, anyhow--they mainly thought it was hilarious, especially when people were swearing and crying.