Revert "ChromeOS: Add SystemTimezoneAutomaticDetection policy."

This reverts commit fc3524a0efece0f2b55b08980b74c23be65ed8dd.

Reason for revert: Broke "Closure Compilation Linux" bot.

Original issue's description:
> ChromeOS: Add SystemTimezoneAutomaticDetection policy.
>
> This CL adds SystemTimezoneAutomaticDetection device policy
> and modifies all necessary components to support it.
>
> BUG=596690
> TEST=unittest,browsertest
>
> Review URL: https://codereview.chromium.org/1843523002
>
> Cr-Commit-Position: refs/heads/master@{#384768}

TBR=stevenjb@chromium.org,cschuet@chromium.org,bartfab@chromium.org,isherman@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=596690

Review URL: https://codereview.chromium.org/1849133006 .

Cr-Commit-Position: refs/heads/master@{#384783}
19 files changed