BuddyPress.org

There is a much simpler, elegant solution to this problem that does not involve messing with the core code.

Use a custom CSS plug-in so you can add your own CSS edits (you should have this anyways) and paste the following line:
#bp-adminbar-visitrandom-menu {display:none;}

I like this solution much better, maybe because I am not technical enough to do the function remove method.

Adam
stargazerinteractive.com