Remove --harmony-async-await runtime flag

test/mjsunit/es8/async-await-species.js

Index: test/mjsunit/es8/async-await-species.js
diff --git a/test/mjsunit/harmony/async-await-species.js b/test/mjsunit/es8/async-await-species.js
similarity index 98%
rename from test/mjsunit/harmony/async-await-species.js
rename to test/mjsunit/es8/async-await-species.js
index bc3db83fdfa1141ede427ba27cd2f0a421abe8cf..e789ccab92eb61bb6b8cfaf3ec234289224acf2a 100644
--- a/test/mjsunit/harmony/async-await-species.js
+++ b/test/mjsunit/es8/async-await-species.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-async-await --allow-natives-syntax
+// Flags: --allow-natives-syntax
 
 function assertEqualsAsync(expected, run, msg) {
   var actual;