Removed deprecated methods from lib/net.js

lib/net.js

@@ -821,11 +821,6 @@ Stream.prototype.flush = function () {
 };
 
 
-Stream.prototype.send = function () {
-  throw new Error('send renamed to write');
-};
-
-
 Stream.prototype._writeQueueLast = function () {
   return this._writeQueue.length > 0 ? this._writeQueue[this._writeQueue.length-1]
                                      : null;