reduce unit test

bytes/bytes_buffer_pool_test.go

@@ -12,11 +12,11 @@ func TestBytesBufferPool(t *testing.T) {
 		t.Error("iobuffer len not match write bytes' size")
 	}
 	PutBytesBuffer(buf)
-	buf2 := GetBytesBuffer()
+	//buf2 := GetBytesBuffer()
 	// https://go-review.googlesource.com/c/go/+/162919/
 	// before go 1.13, sync.Pool just reserves some objs before every gc and will be cleanup by gc.
 	// after Go 1.13, maybe there are many reserved objs after gc.
-	if buf != buf2 {
-		t.Errorf("buf pointer %p != buf2 pointer %p", buf, buf2)
-	}
+	//if buf != buf2 {
+	//	t.Errorf("buf pointer %p != buf2 pointer %p", buf, buf2)
+	//}
 }