Properly blacklist ES6 for-of statement for TurboFan.

test/mjsunit/mjsunit.status

Index: test/mjsunit/mjsunit.status
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 6842bba171a72568cd5fcc918819a43e56c24ee7..2afe075805517f75249fcf9d4e618e9dc6f68c4b 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -125,17 +125,11 @@
   'es6/generators-parsing': [PASS, NO_VARIANTS],
   'es6/generators-poisoned-properties': [PASS, NO_VARIANTS],
   'es6/generators-relocation': [PASS, NO_VARIANTS],
+  'es6/iteration-semantics': [PASS, NO_VARIANTS],
   'es6/regress/regress-2681': [PASS, NO_VARIANTS],
   'es6/regress/regress-2691': [PASS, NO_VARIANTS],
   'es6/regress/regress-3280': [PASS, NO_VARIANTS],
 
-  # Support for ES6 for-of iteration is missing.
-  'es6/array-iterator': [PASS, NO_VARIANTS],
-  'es6/iteration-semantics': [PASS, NO_VARIANTS],
-  'es6/string-iterator': [PASS, NO_VARIANTS],
-  'es6/typed-array-iterator': [PASS, NO_VARIANTS],
-  'es6/arguments-iterator': [PASS, NO_VARIANTS],
-
   ##############################################################################
   # Too slow in debug mode with --stress-opt mode.
   'compiler/regress-stacktrace-methods': [PASS, ['mode == debug', SKIP]],