Remove SK_ANALYTIC_AA_GUARD flag

BUG=skia:

Change-Id: I4e10ba7afc76ed41c6c41275f9b6a5dde3a2a4be
Reviewed-on: https://skia-review.googlesource.com/5502
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Yuqian Li <liyuqian@google.com>
2 files changed