Killing off sponsor-specific pages

[Useless]

I'm in search of opinions on whether or not I should kill off some indexed pages which contain content and ads for non-converting sponsors. I'm not talking about free sites or galleries that other people are linked to; just my personal content pages on one of my sites. Some of the pages are fairly old and I get decent Google images traffic to them, but it's wasted traffic at this point since I can never make a sale from it.

For example, I just discovered this evening that my old CCBill links to DirtyDaisy.com are 404ing. I don't know how long they've been shit, but I'd assume it happened when she went to some other program awhile ago. Would have been nice to know when it happened, of course.

Plus I have another sponsor who keeps their skim set too high since they went to their bells & whistles stats program, so I'd like to shove some pages up her skinny fucking ass too. (I'm seriously considering yanking almost everything that's not CCbill - I'm that pissed at this point.)

Back to the point - should I just be happy with the minimal SE traffic that may find it's way to my other pages and leave those sale-less pages up, or should I toss them in a trash can and set them aflame? My primary concern is the affect on SEs when one tosses indexed pages. With the pages I'm concerned about, I can't simply swap out sponsors due the pages being fairly well SEOd.