[Bug libstdc++/101228] tbb/task.h is Deprecated in newer TBB.

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101228

--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #11)
> Yes, it was fixed by r11-4187 but the problem is still present on the gcc-10
> branch.

I think that commit simply makes it possible to use oneTBB, which doesn't give
a warning. But if you use TBB 2020.3 or older, then you still get a warning.