[compiler] Remove dead code from js-generic-lowering.

[compiler] Remove dead code from js-generic-lowering.

JSLoadContext and JSStoreContext are always reduced in js-typed-lowering.

R=mstarzinger@chromium.org
BUG=

Committed: https://crrev.com/000dea2fa4e79a0ab38a35793e43e74fff366761
Cr-Commit-Position: refs/heads/master@{#41380}

[Michael Starzinger, 2016-11-30 09:45:43]

LGTM.

[neis, 2016-11-30 09:47:53]

The CQ bit was checked by neis@chromium.org

[commit-bot: I haz the power, 2016-11-30 09:48:01]

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, 2016-11-30 10:13:37]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1480499273791350, "parent_rev":
"babef18da29bbd7942bcba9e15ad74281d157b40", "commit_rev":
"3bd5e2b1ffc9e930479a3bb92fcad5fc8a7b25e9"}

[commit-bot: I haz the power, 2016-11-30 10:13:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-30 10:14:26]

Description was changed from

==========
[compiler] Remove dead code from js-generic-lowering.

JSLoadContext and JSStoreContext are always reduced in js-typed-lowering.

R=mstarzinger@chromium.org
BUG=
==========

to

==========
[compiler] Remove dead code from js-generic-lowering.

JSLoadContext and JSStoreContext are always reduced in js-typed-lowering.

R=mstarzinger@chromium.org
BUG=

Committed: https://crrev.com/000dea2fa4e79a0ab38a35793e43e74fff366761
Cr-Commit-Position: refs/heads/master@{#41380}
==========

[commit-bot: I haz the power, 2016-11-30 10:14:27]

Patchset 1 (id:??) landed as
https://crrev.com/000dea2fa4e79a0ab38a35793e43e74fff366761
Cr-Commit-Position: refs/heads/master@{#41380}