function plt_hide_advanced_post_block_menus() {
//Hide the "Advanced Posts" menu.
remove_menu_page('edit.php?post_type=apb');
//Hide the "Advanced Posts → Help" menu.
remove_submenu_page('edit.php?post_type=apb', 'apb-help');
//Hide the "Advanced Posts → Upgrade" menu.
remove_submenu_page('edit.php?post_type=apb', 'apb-upgrade');
}
add_action('admin_menu', 'plt_hide_advanced_post_block_menus', 11);