Remove References to DNT

DNT is deprecated:

And some browsers are removing support. I’d like to scrub the site of any references to DNT.

Yeah.. might as well.

Firefox 135 didn’t remove the DNT header. It only removed the checkbox in about:preferences. The DNT header is still sent as 1 if “tracking content” is blocked in “Enhanced Tracking Protection” (either as “Custom” or “Strict”) or if browsing in a private window.

(source)

They probably do that for compatibility reasons. The main issue is we had respecting DNT as a requirement in the minimum requirements for some things and I don’t think it’s fair to require websites to respect a deprecated feature.