Remove --harmony-modules flag and let embedder decide when modules are used

test/mjsunit/mjsunit.status

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 65 matching lines @@
   'packed-elements': [PASS, NO_VARIANTS],
   'string-indexof-1': [PASS, NO_VARIANTS],
   'unbox-double-arrays': [PASS, NO_VARIANTS],
   'unicode-test': [PASS, NO_VARIANTS],
   'whitespaces': [PASS, NO_VARIANTS],
   'compiler/osr-assert': [PASS, NO_VARIANTS],
   'es6/string-fromcodepoint': [PASS, NO_VARIANTS],
   'regress/regress-2185-2': [PASS, NO_VARIANTS],
   'regress/regress-2612': [PASS, NO_VARIANTS],
 
-  # Modules are busted
-  'harmony/module-linking': [SKIP],
-  'harmony/module-recompile': [SKIP],
-  'harmony/module-resolution': [SKIP],
-  'harmony/regress/regress-343928': [SKIP],
-
   # Issue 3660: Replacing activated TurboFan frames by unoptimized code does
   # not work, but we expect it to not crash.
   'debug-step-turbofan': [PASS, FAIL],
 
   # TODO(mstarzinger): Optimizing top-level code revealed some issues. Fix!
   'bitops-info': [PASS, NO_VARIANTS],  # fails on ARM hardware.
   'md5': [PASS, NO_VARIANTS],  # fails on ARM hardware.
   'debug-break-inline': [PASS, NO_VARIANTS],  # very flaky.
   'debug-compile-event-newfunction': [PASS, NO_VARIANTS],
   'debug-conditional-breakpoints': [PASS, NO_VARIANTS],
@@ skipping 730 matching lines @@
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.
   'array-functions-prototype-misc': [SKIP],
 
   # Stack overflow.
   'big-array-literal': [SKIP],
 }],  # 'gcov_coverage'
 
 ]