bug#24353: 25.1.1: looking-back wrong info

[Eli Zaretskii]

> Date: Sat, 3 Sep 2016 11:42:11 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> 
> As Eli pointed out, there are only 28 occurrences of
> `advertised-calling-convention' in all of Emacs.  It is
> something used very sparingly - precisely because it misleads
> (intentionally).  The question is whether the doc of _this_
> function should mislead about the signature.

That decision was already made.