bug#22207: emacs-25 mishandles info code text on Fedora 23

[Glenn Morris]

Paul Eggert wrote:

> When I use emacs-25 to view the Elisp manual on Fedora 23 x86-64,
> Emacs mishandles the font for code: code is displayed in a
> considerably smaller font, making the manual harder to read and
> looking a bit like a ransom note. 

I guess this is the same issue as http://debbugs.gnu.org/19889
Info-quoted face specifies Courier font.
I still don't think it's a good idea.