Re: What to do with these Pokemon.
Hmm...I can't really answer that question.
So long as you don't use them in tournaments and don't trade them to anyone else as you know they are hacked, it should be fine. Just be careful, as hacked Pokemon can screw up your game if the hacker wasn't very good (and with poor move sets and the fact he/she made it quite clear they were hacked, this seems likely) and messed with coding.
Additionally, why would the person get rid of them? Raises some more uneasy questions...
Frankly, I'd get rid of them, but it's up to you.