Further remove r8 and android_system_sdk from Android rolls https://chromium-review.googlesource.com/c/angle/angle/+/6387225 removed them from third_party, but some files were still referenced by Android.bp Bug: None Change-Id: I18a208e60239320b1315590e8e967ee996f3e4d5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6393655 Auto-Submit: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Cody Northrop <cnorthrop@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>