WordPress Remove WooCommerce checkout billing field validation

add_action('wp_enqueue_scripts', 'override_woo_frontend_scripts');
function override_woo_frontend_scripts() {
	wp_deregister_script('wc-address-i18n');
}


add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields', 10, 1 );
function custom_override_checkout_fields( $fields ) {

	$fields['billing']['billing_phone']['required'] = false;
	unset($fields['billing']['billing_phone']['validate']);
		
	$fields['billing']['billing_country']['required'] = false;
	unset($fields['billing']['billing_country']['validate']);
	
	$fields['billing']['billing_address_1']['required'] = false;
	unset($fields['billing']['billing_address_1']['validate']);
	
	$fields['billing']['billing_city']['required'] = false;
	unset($fields['billing']['billing_city']['validate']);
	
	$fields['billing']['billing_state']['required'] = false;
	unset($fields['billing']['billing_state']['validate']);
	
	$fields['billing']['billing_postcode']['required'] = false;
	unset($fields['billing']['billing_postcode']['validate']);		
	
	return $fields;
}