deleting unwanted NPC photos from clientDB question

Hi, this is a little complicated I think, but would appreciate help with it.

So I have a lot of teens, and NPCs will autonomously use the Photobooth during Prom. It's clogging my clientDB file. I know it's NOT advisable to delete the ClientDB.package file as it can cause black/blank photo, but I really want to get rid of those NPC photos safely. Is there anyway to do that without corrupting the photos I have on my save file?

• I've tried using MCCC to clean (sell off) those NPC inventories but that did not work. The photo might have been gone from their inventory but it still persists in the ClientDB.package file.
• I tried deleting the specific unwanted photo from the clientdb.package file and it caused the blank photos instead in-game :|

I used S4S to view and export photos I'd like saved. Thank you.