removed duplicate writereq.

See 7af74b0#commitcomment-21310482

Author: mcollina

build/files.js

@@ -202,12 +202,7 @@ const headRegexp = /(^module.exports = \w+;?)/m
   ]
   , addConstructors = [
     headRegexp,
-    `$1\n\nfunction WriteReq(chunk, encoding, cb) {
-      this.chunk = chunk;
-      this.encoding = encoding;
-      this.callback = cb;
-      this.next = null;
-    }
+    `$1\n\n
     // It seems a linked list but it is not
     // there will be only 2 of these for each stream
     function CorkedRequest(state) {

lib/_stream_writable.js

@@ -6,12 +6,6 @@
 
 module.exports = Writable;
 
-function WriteReq(chunk, encoding, cb) {
-  this.chunk = chunk;
-  this.encoding = encoding;
-  this.callback = cb;
-  this.next = null;
-}
 // It seems a linked list but it is not
 // there will be only 2 of these for each stream
 function CorkedRequest(state) {
@@ -562,4 +556,4 @@ function CorkedRequest(state) {
       state.corkedRequestsFree = _this;
     }
   };
-}
+}