GitLab

Remove "Back" button after UI review.

Bug: 805505
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I95e343cd0e0626e39b2b8b3919ca5a773f25a2dc
Reviewed-on: https://chromium-review.googlesource.com/884436Reviewed-by: Wenzhao (Colin) Zang <wzang@chromium.org>
Commit-Queue: Alexander Alekseev <alemate@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531726}