remove debug info
diff --git a/test/end2end_test.go b/test/end2end_test.go
index 644c385..862261e 100644
--- a/test/end2end_test.go
+++ b/test/end2end_test.go
@@ -1078,7 +1078,6 @@
 	for {
 		select {
 		case <-ch:
-			//grpclog.Println("start a stream...")
 			ctx, _ := context.WithTimeout(context.Background(), time.Second)
 			if _, err := tc.StreamingInputCall(ctx); err != nil {
 				if grpc.Code(err) == codes.DeadlineExceeded {