How to Hide Admin Custom Login Admin Menus

function plt_hide_admin_custom_login_menus() {
	//Hide the "AC Login" menu.
	remove_menu_page('admin_custom_login');
	//Hide the "AC Login → Settings" menu.
	remove_submenu_page('admin_custom_login', 'admin_custom_login');
	//Hide the "AC Login → Get Pro" menu.
	remove_submenu_page('admin_custom_login', 'admin-custom-login-main-menu');
}

add_action('admin_menu', 'plt_hide_admin_custom_login_menus', 11);

Where do I put this code?