Remove tonalshadows GMs

These aren't testing Skia core functionality

Bug: skia:7518
Change-Id: Ib564dc7b0aa8f137c2c40141fa5d7e9a1bfe4d64
Reviewed-on: https://skia-review.googlesource.com/c/172968
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed