From 66ebeaa0ca28a888b3ca445ab8217bc8c41e4006 Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Tue, 21 Nov 2017 16:53:07 +0100
Subject: [PATCH] cleanup

---
 common/buf/writer.go | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/common/buf/writer.go b/common/buf/writer.go
index 25a3d03f..2ea3cad9 100644
--- a/common/buf/writer.go
+++ b/common/buf/writer.go
@@ -27,10 +27,6 @@ func (w *BufferToBytesWriter) WriteMultiBuffer(mb MultiBuffer) error {
 }
 
 func (w *BufferToBytesWriter) ReadFrom(reader io.Reader) (int64, error) {
-	if readerFrom, ok := w.Writer.(io.ReaderFrom); ok {
-		return readerFrom.ReadFrom(reader)
-	}
-
 	var sc SizeCounter
 	err := Copy(NewReader(reader), w, CountSize(&sc))
 	return sc.Size, err