GitLab

Clean up launched feature flag.

Bug: None
Change-Id: I205696223fd6db4136220f145c5237273df07037
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2590709Reviewed-by: Tao Wu <wutao@chromium.org>
Commit-Queue: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837737}