GitLab

Now that it's been a week since tough_pinch_zoom_cases was refreshed,
delete the old pages.

Bug: 852530
Change-Id: If22c834a48eb6db0847f34ec9b76005e9f96bd58
Reviewed-on: https://chromium-review.googlesource.com/1165266Reviewed-by: Ned Nguyen <nednguyen@google.com>
Commit-Queue: Amy Qiu <amyqiu@google.com>
Cr-Commit-Position: refs/heads/master@{#581243}