Remove stencil related flags from GrInstancedPipelineInfo.

Change-Id: Ieeb8ada92b5196473d5cea77350fd994bfff8916
Reviewed-on: https://skia-review.googlesource.com/9086
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2 files changed