GitLab

Remove misleading comment from DeviceOffHoursProto. The timezone
is not optional and must be valid.

Bug: b:166556614
Change-Id: I9f230297e8aeeb5861ef6834564d763bff6afeb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536436Reviewed-by: Sergey Poromov <poromov@chromium.org>
Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
Cr-Commit-Position: refs/heads/master@{#827235}