DSL runtime effects were unused outside of test code.
Change-Id: I561afc533c7c204183968aff0b9c4389b0587114
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/540917
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>