How do I delete an Ally, Companion

[Alarian]

I added a NPC companion to my character sheet a while back and no longer need him anymore (GM decided he didn't want the hassle of having to plan for extra NPC party members in an already large PC group).

I removed the leadership skills and such, but I can't seem to find any way to delete my NPC from the character sheet. He's currently listed on the Allies Dashboard but there seems to be no way to get rid of him. If I go to Portfolio|Delete Hero|Delete all Allies, it says I can't delete the only hero in the portfolio. It doesn't matter if I have my main character or the ally selected as the active character.

Any help is appreciated.

Thanks.