No uninstall hook

I think that this should do the trick:

/**
 * Implementation of hook_uninstall().
 */
function menutrails_uninstall() {
  variable_del('menutrails_breadcrumbs');
  variable_del('menutrails_menu');
  variable_del('menutrails_node_types');
  variable_del('menutrails_terms');

  variable_del('menutrails_og_group_menu');
  variable_del('menutrails_og_node');
  variable_del('menutrails_og_post_default');
  variable_del('menutrails_og_sub_pages');
}

Not a real patch so setting to CNW.