Remove unused onCanLazyGenerateOnGPU function

Change-Id: I0b9e166d20a4c2ae9ec1afcc5de02312a4402b9a
Reviewed-on: https://skia-review.googlesource.com/150260
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed