[co19] co19_2 status file cleanup
[co19] co19_2 status file cleanup

Change-Id: I69c7d0daf01dca4b84dfc84286d1bb2fa067a4a5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/201480
Reviewed-by: Erik Ernst <251bb01623bfda2cd9151e339a6e783ca432874c@google.com>
Commit-Queue: Erik Ernst <251bb01623bfda2cd9151e339a6e783ca432874c@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk