[Bug libstdc++/62045] [5 Regression] __gnu_pbds::priority_queue, binary_heap_tag> is too slow

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62045

--- Comment #16 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Tobias and Xi, does either of you actually use these PBDS containers for
anything, or where you just looking at it for curiosity's sake?

I'm considering whether it's worth keeping the code in libstdc++.