/**
 * Fully remove Password Strength Meter and zxcvbn.min.js
 */
add_action('wp_print_scripts', 'remove_password_strength_meter');
function remove_password_strength_meter() {
// Deregister script about password strenght meter
wp_dequeue_script('zxcvbn-async');
wp_deregister_script('zxcvbn-async');
}