Remove NVPR

Bug: skia:11760
Change-Id: Ie0fc1aaa3120b37b1d452fdc9a8b5cb91b6ffe1e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/386559
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
60 files changed