Remove all code related to purchasing a license

inc/functions/licensing.php

@@ -1,30 +0,0 @@
-<?php
-/**
- * Licensing Functions
- *
- * @package WP_Ultimo\Functions
- * @since   2.0.0
- */
-
-// Exit if accessed directly
-defined('ABSPATH') || exit;
-
-/**
- * Adds the license key to a given URL.
- *
- * @since 2.0.0
- *
- * @param string $url URL to attach the license key to.
- * @return string
- */
-function wu_with_license_key($url) {
-
-	$license_key = '';
-
-	$license = \WP_Ultimo\License::get_instance();
-
-	$license_key = $license->get_license_key();
-
-	return add_query_arg('license_key', rawurlencode((string) $license_key), $url);
-
-} // end wu_with_license_key;