Remove stray comment from ast.cc

Remove stray comment from ast.cc

This comment used to have a (commented-out) ASSERT attached to it.
But that ASSERT was removed years ago, so the comment is now a
non-sequitar.

Committed: https://crrev.com/4043c45f463711d1b4d03e464088489039760b46
Cr-Commit-Position: refs/heads/master@{#26587}

[adamk, 2015-02-11 00:58:16]

adamk@chromium.org changed reviewers:
+ arv@chromium.org

[adamk, 2015-02-11 00:58:16]

Deletion of the assert was in crrev.com/44510671e908d0efc639513d81efcd81e7f14240

[arv (Not doing code reviews), 2015-02-11 15:13:53]

The CQ bit was checked by arv@chromium.org

[arv (Not doing code reviews), 2015-02-11 15:13:54]

lgtm

[commit-bot: I haz the power, 2015-02-11 15:14:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/918453002/1

[commit-bot: I haz the power, 2015-02-11 15:36:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-11 15:36:53]

Patchset 1 (id:??) landed as
https://crrev.com/4043c45f463711d1b4d03e464088489039760b46
Cr-Commit-Position: refs/heads/master@{#26587}