don't force a full setup for getting storage stats

the auto-setup is good enough

Signed-off-by: Robin Appelman <robin@icewind.nl>

apps/files/lib/Controller/AjaxController.php

@@ -40,7 +40,6 @@ class AjaxController extends Controller {
 	 * @NoAdminRequired
 	 */
 	public function getStorageStats(string $dir = '/'): JSONResponse {
-		\OC_Util::setupFS();
 		try {
 			return new JSONResponse([
 				'status' => 'success',