Remove shawnsingh@ from OWNERS.

Remove shawnsingh@ from OWNERS.

He's no longer working on chromium, so this confuses people
looking for a reviewer.

R=enne

Committed: https://crrev.com/b76788015acaae4e6c885aa4f9cb9656c08d5a23
Cr-Commit-Position: refs/heads/master@{#299791}

[enne (OOO), 2014-10-15 21:19:05]

The CQ bit was checked by enne@chromium.org

[enne (OOO), 2014-10-15 21:19:06]

lgtm

[enne (OOO), 2014-10-15 21:19:20]

Can you also remove him from ui/gfx?

[commit-bot: I haz the power, 2014-10-15 21:20:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/654293004/1

[commit-bot: I haz the power, 2014-10-16 00:23:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-16 00:24:27]

Patchset 1 (id:??) landed as
https://crrev.com/b76788015acaae4e6c885aa4f9cb9656c08d5a23
Cr-Commit-Position: refs/heads/master@{#299791}