Completely disable WordPress from setting cache-control/pragma/expires, etc head

Alright, so I’m fine-tuning my install and notice that (at least from the looks of it) WordPress itself is setting headers for Cache-Control, Expires and Pragma (that’s the only one I believe?) and I’m pulling my hair out trying to disable that.

I’m on WP 3.9 and from the looks of it in wp-includes/functions.php on like 966, 967 and 968 is where it’s setting them. Oddly I’ve removed those 3 lines yet it’s still setting the headers?

So I’m pulling my hair out on how to stop WordPress from setting any sort of headers as I’m competent enough to do it myself via httpd.conf. :-/