Revert of Fix CapsLock remapping.

Revert of Fix CapsLock remapping. (patchset #2 id:20001 of https://codereview.chromium.org/959923002/)

Reason for revert:
EventConverterEvdevImplTest.KeyWithLock failing consistently on Linux ChromiumOS Ozone Tests (1).

Original issue's description:
> Fix CapsLock remapping.
>
> Emulates the ChromeOS/X11 method of using F16 and Mod3 to
> represent the caps lock key before remapping.
>
> BUG=461485
> TEST=On device with external keyboard
>
> Committed: https://crrev.com/5fdc45c765de00dd9143879864fa57c7d133e309
> Cr-Commit-Position: refs/heads/master@{#318240}

TBR=spang@chromium.org,derat@chromium.org,kpschoedel@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=461485
Committed: https://crrev.com/da5a48504c87a681c6ffc27dde37960a6d505a94
Cr-Commit-Position: refs/heads/master@{#318278}

[grt (UTC plus 2), 2015-02-26 19:16:41]

Created Revert of Fix CapsLock remapping.

[commit-bot: I haz the power, 2015-02-26 19:25:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/965473002/1

[commit-bot: I haz the power, 2015-02-26 19:26:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-26 19:27:55]

Patchset 1 (id:??) landed as
https://crrev.com/da5a48504c87a681c6ffc27dde37960a6d505a94
Cr-Commit-Position: refs/heads/master@{#318278}