function plt_hide_darkify_menus() {
//Hide "Darkify".
remove_menu_page('darkify');
//Hide "Darkify → Darkify".
remove_submenu_page('darkify', 'darkify');
//Hide "Darkify → Black Friday Offer".
remove_submenu_page('darkify', 'ta_discounts');
//Hide "Darkify → 👑 Upgrade to Pro!".
remove_submenu_page('darkify', 'https://1.envato.market/n17Pv7');
}
add_action('admin_menu', 'plt_hide_darkify_menus', 11);