don't use deprecated (raw) form of SkPatchUtils, delete duplicate util

deprecated API still used in android -- will fix (and then delete)

BUG=skia:6366

Change-Id: Icd87acc680f7c8ae66ac231cb5d254f5eb178008
Reviewed-on: https://skia-review.googlesource.com/9864
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Reed <reed@google.com>
10 files changed