Remove data event that is not needed after-all.

Author: colinmollenhour

Diff for: lib/node-http-proxy/http-proxy.js

@@ -325,7 +325,6 @@ HttpProxy.prototype.proxyRequest = function (req, res, buffer) {
           response.pause();
         }
       }
-      self.emit('data', chunk, req);
     }
 
     response.on('data', ondata);