remove SK_SUPPORT_LEGACY_REFENCODEDDATA_NOCTX flag

BUG=skia:

Change-Id: I51b7778db8b596b2633b6be9488af984cee2af70
Reviewed-on: https://skia-review.googlesource.com/5713
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
8 files changed