Disable Windows arm64 corefx cron jobs
Disable Windows arm64 corefx cron jobs

These currently all fail with timeout. They also take way too much time
to run. We have good Linux/arm64 corefx test coverage already.

The issue of these runs being slow is tracked by
https://github.com/dotnet/coreclr/issues/21236.

wtgodbe/coreclr,poizan42/coreclr,krk/coreclr,wtgodbe/coreclr,cshung/coreclr,poizan42/coreclr,mmitche/coreclr,wtgodbe/coreclr,mmitche/coreclr,mmitche/coreclr,poizan42/coreclr,mmitche/coreclr,poizan42/coreclr,krk/coreclr,mmitche/coreclr,cshung/coreclr,wtgodbe/coreclr,cshung/coreclr,krk/coreclr,mmitche/coreclr,cshung/coreclr,cshung/coreclr,krk/coreclr,wtgodbe/coreclr,wtgodbe/coreclr,krk/coreclr,poizan42/coreclr,poizan42/coreclr,cshung/coreclr,krk/coreclr