Don't deprecate readyState, yet

lib/net.js

@@ -386,13 +386,8 @@ exports.createConnection = function (port, host) {
 };
 
 
-var readyStateMessage;
 Object.defineProperty(Stream.prototype, 'readyState', {
   get: function () {
-    if (!readyStateMessage) {
-      readyStateMessage = 'readyState is depricated. Use stream.readable or stream.writable';
-      sys.error(readyStateMessage);
-    }
     if (this._resolving) {
       return 'opening';
     } else if (this.readable && this.writable) {