Ok, we'll add this option. But at the moment you can use this CSS Code:

#wpforo #wpforo-wrap .wpforo-post .wpf-right .wpf-post-edited{display:none;}

Navigate to Forums > Settings > Styles and put this code in Custom CSS Code textarea.

Thank you very much for this option.

I was thinking an option (maybe somewhere in settings) where you could check a box (like this):

Admins editing not be displayed ☑

Or maybe, after editing a post you could be asked if you want to show the editing comment.