[Bug libstdc++/120235] std::fabs(const std::complex&) should not be defined

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120235

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Aha, it was present in a C++0x draft but removed by
https://cplusplus.github.io/LWG/issue595