Remove some dead fields from isolate.h

Remove some dead fields from isolate.h

R=jochen@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2637923002
Cr-Commit-Position: refs/heads/master@{#42391}
Committed: https://chromium.googlesource.com/v8/v8/+/b5409ea2e058080f89df87b2d83c0f5cfb86cca0

[titzer, 2017-01-16 18:10:46]

The CQ bit was checked by titzer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-01-16 18:10:54]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[titzer, 2017-01-16 18:11:04]

PTAL, all red.

[jochen (gone - plz use gerrit), 2017-01-16 18:15:42]

lgtm

[commit-bot: I haz the power, 2017-01-16 18:41:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-01-16 18:41:22]

Dry run: This issue passed the CQ dry run.

[titzer, 2017-01-17 09:29:23]

The CQ bit was checked by titzer@chromium.org

[commit-bot: I haz the power, 2017-01-17 09:29:33]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-17 09:31:11]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484645363563750, "parent_rev":
"29563017073b3571952c8434c81c3de117501a39", "commit_rev":
"b5409ea2e058080f89df87b2d83c0f5cfb86cca0"}

[commit-bot: I haz the power, 2017-01-17 09:31:15]

Description was changed from

==========
Remove some dead fields from isolate.h

R=jochen@chromium.org
BUG=
==========

to

==========
Remove some dead fields from isolate.h

R=jochen@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2637923002
Cr-Commit-Position: refs/heads/master@{#42391}
Committed:
https://chromium.googlesource.com/v8/v8/+/b5409ea2e058080f89df87b2d83c0f5cfb8...
==========

[commit-bot: I haz the power, 2017-01-17 09:31:15]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/b5409ea2e058080f89df87b2d83c0f5cfb8...