Remove temporarily_sanitize

Added as part of https://skia-review.googlesource.com/c/skia/+/132261/
As I understand it, this is no longer needed to prevent linear blending.

Change-Id: Ieddf1a86f2d5c6c874217549099a4168d2c44b47
Reviewed-on: https://skia-review.googlesource.com/c/189166
Commit-Queue: Leon Scroggins <scroggo@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
1 file changed