Remove SkFontHost_mac.cpp.

This file is now just a stub. Remove it.

Change-Id: I3156c1f2218ebb69a52558e0d139309e1c108b74
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/294916
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
3 files changed