Should AllowReversePInvokeCallsAttribute be marked Obsolete?

[AaronRobinsonMSFT]

Should AllowReversePInvokeCallsAttribute be marked Obsolete and point to NativeCallableAttribute? This appears to be a legacy attribute with no real application anymore.

/cc @jkotas @stephentoub

[jkotas]

This attribute is part of code access security (CAS) family of attributes. It should be on the same plan as the rest of them.

We should mark all CAS attributes as obsolete once we have the fine grained controls for obsoleting in place (#31279 (comment)).

[jkoritzinsky]

I believe the fine grained obsoletion support is merged in and supported in Roslyn.

[AaronRobinsonMSFT]

This can be addressed by following the pattern in #37536.