Delete purchase history

It can't be done. The most that you can do is hide individual purchases from the list.

Hide apps for your iPhone, iPad, iPod touch, or Mac - Apple Support

ASC - Late 2012 Mac mini, macOS 10.13.5; Watch, watchOS 4.3.1; iPad Air 2 & iPhone 7+, iOS 11.4; TV 4th Gen, tvOS 11.4;  Airport Express

No.

Does the apps in my purchased history use up space on my device still even though I deleted it from my device. I even cleared my backup as well.