remove android legacy flags

relies on https://googleplex-android-review.git.corp.google.com/#/c/2060523/ landing first

Bug: skia:
Change-Id: I603c8e0835235e9d81bd0a5a559cb5ab5b5cfd56
Reviewed-on: https://skia-review.googlesource.com/11350
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2 files changed