Remove stale references to --harmony-arrays flag in mjsunit tests

test/mjsunit/es6/array-fill.js

Index: test/mjsunit/es6/array-fill.js
diff --git a/test/mjsunit/harmony/array-fill.js b/test/mjsunit/es6/array-fill.js
similarity index 98%
rename from test/mjsunit/harmony/array-fill.js
rename to test/mjsunit/es6/array-fill.js
index eae18d113bf7e3d4fbbc2ecba48940009fc08f5b..ef316e814668f8fe84c500cf7c5c129e14683fc5 100644
--- a/test/mjsunit/harmony/array-fill.js
+++ b/test/mjsunit/es6/array-fill.js
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-arrays
-
 assertEquals(1, Array.prototype.fill.length);
 
 assertArrayEquals([].fill(8), []);