[TheLastSuperman]

I recall a few mods for this but only located one:
https://vborg.vbsupport.ru/showthread.php?t=236785

There may be others however I bet they're for 3.x series... I also did a custom mod for this once which did similar to Borbole's mod which also removed all IP's from places such as postbit and other where the little ip pc icon appears and discloses ip when hovered. I would still search more, use Google as well because it shows more relevant search results (imo) than simply using the search function here alone.

That mod from what I read and remember only hides Super-Admin IP's though, you could modify to suite normal admins I suppose (have not viewed file) but you'll need to check. DO NOT UNDER ANY CIRCUMSTANCES use the above mod and make all admins into Super-Admins, that is NOT ADVISED - You've been CAPS WARNED .