Remove deprecated v8::Object::TurnOnAccessCheck() from the V8 API.

test/mjsunit/migrations.js

Index: test/mjsunit/migrations.js
diff --git a/test/mjsunit/migrations.js b/test/mjsunit/migrations.js
index 6a2ea64a7a0fe1c1325eb9f79c0c133a814e958f..288bc610312edc2c6ae7eeaf4cabbeb5d794463e 100644
--- a/test/mjsunit/migrations.js
+++ b/test/mjsunit/migrations.js
@@ -278,18 +278,6 @@ var migrations = [
     migr: function(o, i) { Object.observe(o, function(){}); },
   },
   {
-    name: "%EnableAccessChecks",
-    migr: function(o, i) {
-      if (typeof (o) !== 'function') %EnableAccessChecks(o);
-    },
-  },
-  {
-    name: "%DisableAccessChecks",
-    migr: function(o, i) {
-      if ((typeof (o) !== 'function') && (o !== global)) %DisableAccessChecks(o);
-    },
-  },
-  {
     name: "seal",
     migr: function(o, i) { Object.seal(o); },
   },