Revert "Add SkTypeface::getVariationDesignPosition."

This reverts commit 0f3d0c37dbcaf4ec271d5fe847becc9b1aa6f537.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Add SkTypeface::getVariationDesignPosition.
> 
> Allow users to query a typeface's position in variation design space.
> 
> Change-Id: I173ee9eefdddee6b2613435ebcc6b08c25b382ed
> Reviewed-on: https://skia-review.googlesource.com/8684
> Commit-Queue: Ben Wagner <bungeman@google.com>
> Reviewed-by: Mike Reed <reed@google.com>
> 

TBR=bungeman@google.com,reed@google.com,reviews@skia.org,drott@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I484fe52c1f89e7b6d0024dcabf7c59d0e8b5b5e7
Reviewed-on: https://skia-review.googlesource.com/8929
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
29 files changed