Send empty data for 'noop' operations

src/mongodb_mirror/client.py

@@ -104,7 +104,7 @@ class SocketMirrorClientSimpleProtocol(BaseSocketMirrorClient):
     async def noop(self, ts, data):
         await self.ws.send_json({
             'type': 'noop',
-            'data': data,
+            'data': {},
             'ts': ts
         }, dumps=ujson.dumps)