function logi_remove_strength_meter() {
    if (wp_script_is('wc-password-strength-meter', 'done')) {
        ?>
        <script type="text/javascript">
            jQuery(function ($) {

                function let_me_sell() {
                    $('form.checkout input[type="submit"]').removeAttr('disabled');
                }

                $( document.body )
                    .on( 'keyup', 'form.checkout #account_password', let_me_sell )
                    .on( 'change', 'form.checkout #createaccount', let_me_sell );
            });
        </script>
        <?php
    }
}

add_action('wp_footer', 'logi_remove_strength_meter', 99);