I'm working on turning around a site that's been up and steady for about 5 years. there's no less than 6 different various 'helper' 'foundation' libraries, help

I'm working on turning around a site that's been up and steady for about 5 years. there's no less than 6 different various 'helper' 'foundation' libraries, helper libraries, utility libraries, libraries that don't get used anymore. All interpolated into a mess. This whole thing is developed by some rotating cast of developers on contracts, who have no interest in maintaining anything long term, and so its just piled up and piled up. Technical debt doesn't exist when you will leave the project for the next guy. Anyway... we're making progress against it slowly but it's really frustrating because our website is loading so much crap and untangling it takes forever. Half of me wants to throw the whole thing out.