Cleanup cargo2android configs and patches am: b954363880 am: 15db1f730e Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/grpcio-compiler/+/2751203 Change-Id: I0689ab35208f1c84f3cf82df3158d262978a002c Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>