clean up SkPathEffectPriv removal

Change-Id: I83ad61869074e398ec0b452ae6efe09da5969f7e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/411837
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Herb Derby <herb@google.com>
2 files changed