Remove onMakeBurstPipelineContext

No longer used?

Change-Id: Ib944e5a18feb70444b34f5aba5f5c4019df1abdb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/226217
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>
3 files changed