Remove a file only needed with an old Mac SDK.

BUG=1044828

Change-Id: I7ce05c32bb0731a94ae65309a1ca2f625d2390ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2015410
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735553}
29 files changed