cw_stuff.php

<?php
/*
Plugin Name: Courseware Hacks
*/

function cw_hack_tabs() {
  global $wp_filter;
  foreach ( reset( $wp_filter['courseware_group_nav_options'] ) as $k => $v ){
    $klass = reset( $v['function'] );
    $method = end( $v['function'] );
    if ( get_class( $klass ) == 'BPSP_Schedules' && $method == 'add_nav_options' ) 
      unset( $wp_filter['courseware_group_nav_options'][10][$k] );
  }
}
add_action('bp_groups_setup_nav', 'cw_hack_tabs');
?>