cleanup a test
diff --git a/test/end2end_test.go b/test/end2end_test.go
index 016260d..99b0d3c 100644
--- a/test/end2end_test.go
+++ b/test/end2end_test.go
@@ -733,13 +733,13 @@
 	}
 	wg.Wait()
 }
-/*
+
 func TestRPCTimeout(t *testing.T) {
 	for _, e := range listTestEnv() {
 		testRPCTimeout(t, e)
 	}
 }
-*/
+
 // TODO(zhaoq): Have a better test coverage of timeout and cancellation mechanism.
 func testRPCTimeout(t *testing.T, e env) {
 	s, cc := setUp(t, nil, math.MaxUint32, "", e)