Remove Sub Menu Toggle || Twenty Twenty-One Theme

/* Remove Sub Menu Toggle || Twenty Twenty-One Theme */
function remove_twenty_twenty_one_add_sub_menu_toggle() {
    remove_filter('walker_nav_menu_start_el', 'twenty_twenty_one_add_sub_menu_toggle');
}
add_action('after_setup_theme', 'remove_twenty_twenty_one_add_sub_menu_toggle');