views: remove layout owners from test owners

The layout owners file is gone, which renders the test owners file
broken. This was broken in r810403.

This change requires a presubmit skip because the presubmit errors
out on the missing owners file.

NOPRESUBMIT=true

Bug: None
Change-Id: Ic0945a2abf3bf54908176b7ea87e6a6f62ef507f
Tbr: pkasting@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2431773
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#810708}

ui/views/test/OWNERS

 per-file *_mac*=tapted@chromium.org
 per-file *x11*=thomasanderson@chromium.org
-per-file layout_*=file://ui/views/layout/OWNERS