bbPress.org

This will remove the ability for moderators to see IPs anywhere in bbPress.

add_filter('get_roles','no_view_ip');

function no_view_ip($roles){unset($roles['moderator']['capabilities']['view_by_ip']); return $roles;}

It will work in bbPress 0.9 or 1.0.

In 1.0 you can just put it into functions.php in your template folder or make it into a mini-plugin for 0.9