WP disable strong password script

<?php
/**
 * Change min password strength.
 *
 * @author James Kemp (Iconic)
 * @link http://iconicwp.com/decrease-strength-required-woocommerce-passwords/
 * @param int $strength
 * @return int
 */
function myclass_min_password_strength( $strength ) {
    return 6;
}

add_filter( 'woocommerce_min_password_strength', 'myclass_min_password_strength', 10, 1 );