review person not-a-match declarations

[justincy]

https://familysearch.org/developers/docs/api/tree/Person_Not_A_Match_List_resource

This is a very advanced one. It can be useful in identifying duplicate/bad data that needs to be resolved. Often people were marked as "not a match" in the past but don't need that distinction anymore because they're no longer matches after their data was cleaned up.

Not necessary by any means though.