Revert "add a stub for running fiddles as GMs"

This reverts commit adfc22df860a9175713d50a507bf5dbb3ee32415.

Reason for revert: breaks building DM in Android, probably Google3 too.  Shame.

Original change's description:
> add a stub for running fiddles as GMs
> 
> This is about the 15th time I've hacked this up.
> 
> Change-Id: I0c75c0d04133d867e942c39eba693fd7227ba0f5
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/233240
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Mike Klein <mtklein@google.com>

TBR=mtklein@google.com,bsalomon@google.com

Change-Id: I56207630eeba4fb411111fd40e6bc532cef39407
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/233241
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
3 files changed