diff --git a/common/io/reader.go b/common/io/reader.go
index a2d2dbb82..3355f1014 100644
--- a/common/io/reader.go
+++ b/common/io/reader.go
@@ -38,12 +38,6 @@ func (this *AdaptiveReader) Read() (*alloc.Buffer, error) {
 		return nil, err
 	}
 
-	//if buffer.Len() >= alloc.BufferSize {
-	//	this.allocate = alloc.NewLargeBuffer
-	//} else {
-	//	this.allocate = alloc.NewBuffer
-	//}
-
 	return buffer, nil
 }