Introduced in recent versions of WooCommerce and WordPress, there is an integrated Password Strength Meter which forces users to use strong passwords.

It loads below file
password-strength-meter.min.js
zxcvbn.min.js

There are two ways.

1. Custom code in function.php

add_action('wp_print_scripts', function(){				
	if( is_admin() ) {
		return;
	}				
	
	if( ( isset($GLOBALS['pagenow']) && $GLOBALS['pagenow'] === 'wp-login.php' ) || ( isset($_GET['action']) && in_array($_GET['action'], array('register','rp', 'lostpassword' )) ) ) {
		return;
	}
	
	if( class_exists('WooCommerce') && (is_account_page() || is_checkout()) ) {
		return;
	}
	
	wp_dequeue_script('password-strength-meter');
	wp_deregister_script('password-strength-meter');

	wp_dequeue_script('wc-password-strength-meter');
	wp_deregister_script('wc-password-strength-meter');
	
	wp_dequeue_script('zxcvbn-async');
	wp_deregister_script('zxcvbn-async');
	
}, 100);

2. Using EC Addons