chore: remove legacy polyfill

Author: matthewhilton

classes/privacy/provider.php

@@ -23,13 +23,11 @@
  */
 namespace tool_objectfs\privacy;
 use core_privacy\local\metadata\null_provider;
-use core_privacy\local\legacy_polyfill;
 /**
  * Class provider
  * @package tool_objectfs
  */
 class provider implements null_provider {
-    use legacy_polyfill;
     /**
      * Get the language string identifier with the component's language
      * file to explain why this plugin stores no data.