If you choose to spare Paathanux rather than killing him - meaning you can no longer talk to the blades... does that mean the "Bring a Follower to Delphine" disappear, or does it just sit there, incomplete? It's just, I hate having a quest sitting there, unfinished... but at the same time, if the latter case is correct, I'd have to go back to a far earlier save to get to the point before they automatically give you the Paarthurnax quest.

If it doesn't go if you spare Paarthunax... Is there any way to get rid of it?

Many thanks!