BuddyPress.org

Hi–

Searched all over and tried several options until I found this one that removed the RSS feed for me.

Hope this helps anyone who is looking to do this.

I have a child theme for Twenty Fourteen so in the functions.php I put this:

function bp_remove_feeds() {
        remove_action( 'wp', 'bp_activity_action_sitewide_feed', 3 );
        remove_action( 'wp', 'bp_activity_action_personal_feed', 3 );
        remove_action( 'wp', 'bp_activity_action_friends_feed', 3 );
        remove_action( 'wp', 'bp_activity_action_my_groups_feed', 3 );
        remove_action( 'wp', 'bp_activity_action_mentions_feed', 3 );
        remove_action( 'wp', 'bp_activity_action_favorites_feed', 3 );
        remove_action( 'wp', 'groups_action_group_feed', 3 );
}
add_action('init', 'bp_remove_feeds');

In my styles.css I put this:

.feed{display:none;}

What you need to do before you use is clear your browser cache`. Then test.
It worked for me and I hope it works for anyone else looking for this solution. 🙂