fix google3 build (don't build the new gm)
This reverts commit 9cc53fa4bd.
Change-Id: I3de8aa4959f62a380f1d4aaf2b788d250775e194
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/214442
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>