remove error pop-up as there's no way to catch it

Author: drahnieR

lib/mdns-server.js

@@ -83,9 +83,7 @@ Server.prototype._respondToQuery = function (query) {
         })
     }
 
-    self.mdns.respond({ answers: answers, additionals: additionals }, function (err) {
-      if (err) throw err // TODO: Handle this (if no callback is given, the error will be ignored)
-    })
+    self.mdns.respond({ answers: answers, additionals: additionals })
   })
 }