GitLab

Clean up. It's been enabled by default for awhile now.

Change-Id: Ice4ffc2d69aa8f17564293d9befe3dc3021244b5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1725536
Auto-Submit: Bo <boliu@chromium.org>
Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682300}