Revert "login: need-arc-migration-policy-check flag"

This reverts commit 69a3ec7f36f11a0fddc6e6b3083ebc1276358753.

Reason for revert: This functionality was needed for device
policy implemented in M-60. Starting from M-61 it is covered
by an user policy and the flag is not needed.

Original change's description:
> login: need-arc-migration-policy-check flag
>
> If arc_policy_migration_check USE flag is enabled, set
> need-arc-migration-policy-check.
>
> BUG=chromium:722371
> TEST=none
>
> Change-Id: I8741984abc35669edbe8d443d4334d98005a7d8b
> Reviewed-on: https://chromium-review.googlesource.com/533236
> Commit-Ready: Igor <igorcov@chromium.org>
> Tested-by: Igor <igorcov@chromium.org>
> Reviewed-by: Dan Erat <derat@chromium.org>

Bug: chromium:725493
Change-Id: I1fa76bb683c6019ebff9ae47472a44d4a21182ad
Reviewed-on: https://chromium-review.googlesource.com/602150
Commit-Ready: Igor <igorcov@chromium.org>
Tested-by: Igor <igorcov@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
(cherry picked from commit 4016485c26034ae9726d408f0c242abb87896faa)
Reviewed-on: https://chromium-review.googlesource.com/626125
Commit-Queue: Igor <igorcov@chromium.org>
1 file changed