[Bug c++/60691] Build fails in libstdc++ with --enable-sjlj-exceptions on ARM

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60691

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Just don't do silly things.

Just because an option exists doesn't mean you need to use it.