Merge "Remove R8-specific flags from soong config" am: fd659ef7 am: b2c9c069 am: b2345838

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2412732



Change-Id: Ie29230c535bae6f1d85c65338211dd387526c3b6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>