BuddyPress.org

For what it’s worth, I’ve overridden buddypress/activity/post-form.php and basically deleted all the content from that. This *appears* to work on my test site, removing the What’s New field from both the user’s profile and their “group” page.

<?php
/**
 * BuddyPress - Activity Post Form
 *
 * @package BuddyPress
 * @subpackage bp-legacy
 * @version 3.0.0
 *
 */

?>

I’m a little unsure if I should actually have that closing ?>, but it appear to work that way.