function plt_hide_hdtasks_menus() {
//Hide the "HDTasks" menu.
remove_menu_page('hdt_projects');
//Hide the "HDTasks → Projects" menu.
remove_submenu_page('hdt_projects', 'hdt_projects');
//Hide the "HDTasks → About / Options" menu.
remove_submenu_page('hdt_projects', 'hdt_about');
}
add_action('admin_menu', 'plt_hide_hdtasks_menus', 12);