Remove Dawn Ganesh-specific SkSL test disables.

We no longer have a Dawn Ganesh backend.

Bug: b/40045010
No-Try: true
Change-Id: I54d54df6dff4ff352762fd07f6f6a80fb2649947
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/757396
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
2 files changed