Interestingly enough, this mod doesn't seem to work properly for my forums (v2.0.2 - emulated to 2.0.0).
When editing posts and checking the "hide last edit" box, it still displays the "last edit by" tidbit at the bottom. (Yes, I've checked using a guest account, and it still displays for guests/members.)
It's odd though, that when re-editing the post, the "hide last edit" box is unchecked again (not sure if that's normal).
The mod uploaded and installed just fine, it just doesn't appear to work.