Remove deprecated state derivation functions #6610
Description
Remove the deprecated state derivations getAnonymizedState and getPersistentState.
These were deprecated in #6359 because two new properties were added that we had no equivalent derivation function for. Instead we now export deriveStateFromMetadata directly, which can be used to derive state for any metadata property. Another reason to deprecate and remove these is that getAnonymizedState no longer makes sense as the name for that function given that anonymous was renamed to includeInDebugSnapshot in #6593