function plt_hide_universam_demo_menus() {
//Hide the "Dashboard →" menu.
remove_submenu_page('index.php', 'usam-install');
//Hide the "Media → Галереи" menu.
remove_submenu_page('upload.php', 'edit-tags.php?taxonomy=usam-gallery&post_type=attachment');
//Hide the "Товары" menu.
remove_menu_page('edit-tags.php?taxonomy=usam-variation&post_type=usam-product');
}
add_action('admin_menu', 'plt_hide_universam_demo_menus', 11);