BuddyPress.org

If you want to add support for the new notification tab (show the notifications table), then add

elseif ( bp_is_user_notifications() ) :
bp_get_template_part( 'members/single/notifications' );

to your themes’s /members/single/home.php file. Look for the following loop and add it there.

if ( bp_is_user_activity() || !bp_current_component() ) :

I dont suggest removing the menu tab since members wont have any way of clearing their notifications.

Hope that helps.