Remove code guarded by SK_LEGACY_SURFACE_PROPS.

This removes the last of the SkFontHost LCD globals and the
SkSurfaceProps::kLegacyFontHost_InitType.

Bug: skia:3934
Change-Id: Ic2342a3ea3dbcd075d6817cbd3fc27274e376b8d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329364
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Mike Reed <reed@google.com>
11 files changed