[skottie] Reduce parser verbosity

TBR=

Change-Id: I9a949cfb9e7625b93988d9fc251c8696ae99007a
Reviewed-on: https://skia-review.googlesource.com/101080
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed