remove dead code around old SkPath enums

Change-Id: I8dc06da48e881d3a9c40b47c799afe27bdcce819
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/257689
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
30 files changed