Remove routines no longer needed since stripping NVPR

Change-Id: Ia1a545cc5c52d9af654f980083803ece39a92614
Reviewed-on: https://skia-review.googlesource.com/112260
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Herb Derby <herb@google.com>
5 files changed