GitLab

Most likely has already been disabled on mobile and an experiment found
that most likely can also safely be disabled on desktop.

+ Remove now redundent fieltrial testing config of the desktop
  experiment.

Bug: 1009579
Change-Id: I5028c2babcef71862096dcd9684eaa29d0ad08b5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2142758Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Steven Holte <holte@chromium.org>
Auto-Submit: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758247}