Remove abandoned fSubdivisionsMax

Was removed in https://skia-review.googlesource.com/c/skia/+/187922
There's probably a better high level solution.

Bug: oss-fuzz:12991
Change-Id: Ie64e46f17b91a8b6aa9f0be1b7d060d4033aba6e
Reviewed-on: https://skia-review.googlesource.com/c/190439
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed