Revert "Upgrade tokio-macros to 2.2.0" am: 7840b9dedd

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/tokio-macros/+/2953667

Change-Id: I54b36fd931deafd4b61fd2849ef2c9bab18081aa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>