Remove unreferenced files.

These were added more than 4 years ago in
https://codereview.chromium.org/314393003 but not added to any
build files, and they haven't been touched since.

This resurrects https://codereview.chromium.org/2845063003/
which intended to remove these files but was never submitted.

BUG=661774, 381466

Change-Id: I9a06a3f4e936c59a16cb271db2d0b83af249df48
Reviewed-on: https://chromium-review.googlesource.com/1150664
Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578045}
3 files changed