benchmark: strip BOM in dgram/bind-params

PR-URL: #11479
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Author: addaleax

benchmark/dgram/bind-params.js

@@ -1,4 +1,4 @@
-'use strict';
+'use strict';
 
 const common = require('../common.js');
 const dgram = require('dgram');