remove dead code -- older than min picture version

Bug: skia:
Change-Id: I9bd3ed23debb4d0cbfff5417f34daf64b101ca2d
Reviewed-on: https://skia-review.googlesource.com/59602
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
6 files changed