GitLab

Remove screenshot png file

Screenshots should not be checked in to the codebase since they are
uploaded to a gs bucket when the .png.sha1 files are created.

Bug: none
Change-Id: Ic2a2eb53b294957f5836837222ecdc9b341510f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2612099
Auto-Submit: Trent Begin <tbegin@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Ken Rockot <rockot@google.com>
Cr-Commit-Position: refs/heads/master@{#841084}