GitLab

Remove from SingleProcessMash filter file since it doesn't seem related
to Mash.

Bug: 873884
Change-Id: I70dacb5b97fc650046b3d9f87eab8694dd6b0015
Reviewed-on: https://chromium-review.googlesource.com/c/1323900Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606151}