- Instead of saying "do not use", explain that the function was
deprecated for performance reasons.
Some users may have a legitimate use of this function even though we
deprecated it. Since there are no plans to remove it from the API get
rid of the "do not use" warning.
Bug: https://curl.se/mail/lib-2024-11/0029.html
Reported-by: Jacob Champion
Closes https://github.com/curl/curl/pull/15576