Remove GrTestMeshDrawOp

Change-Id: If7465391b5e704b16b3ded2a73fafe088e2ea8e0
Reviewed-on: https://skia-review.googlesource.com/23384
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
3 files changed