[mjsunit] regress/regress-crbug-491062 takes too long with --always-opt.

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/1183133002

Cr-Commit-Position: refs/heads/master@{#29021}

test/mjsunit/mjsunit.status

@@ -175,6 +175,7 @@
   ##############################################################################
   # No need to waste time for this test.
   'd8-performance-now': [PASS, NO_VARIANTS],
+  'regress/regress-crbug-491062': [PASS, NO_VARIANTS],
 
   # Issue 488: this test sometimes times out.
   'array-constructor': [PASS, TIMEOUT],
@@ -379,7 +380,6 @@
   'regress/regress-331444': [PASS, SLOW],
   'regress/regress-490': [PASS, SLOW],
   'regress/regress-crbug-217858': [PASS, SLOW],
-  'regress/regress-crbug-491062': [PASS, SLOW],
   'regress/regress-create-exception': [PASS, SLOW],
   'regress/regress-json-stringify-gc': [PASS, SLOW],
   'string-indexof-2': [PASS, SLOW],