Disable billing fields for virtual products WooCommerce

functions.php

add_filter('woocommerce_billing_fields','wpb_custom_billing_fields');
function wpb_custom_billing_fields( $fields = array() ) {
		add_filter( 'woocommerce_cart_needs_shipping_address', '__return_false');
     
    // No billing details
    unset($fields['billing_first_name']);
		unset($fields['billing_last_name']);
		unset($fields['billing_company']);
		unset($fields['billing_address_1']);
		unset($fields['billing_address_2']);
		unset($fields['billing_state']);
		unset($fields['billing_city']);
		unset($fields['billing_phone']);
		unset($fields['billing_postcode']);
		unset($fields['billing_country']);

    // Make email optional:
		$fields['billing_email']['required'] = false;
	  return $fields;
}