[PATCH v2] elf: Synchronize <elf.h> section header flags with binutils

[Florian Weimer]

* Mark Wielaard:

> On Mon, Dec 07, 2020 at 04:19:50PM +0000, Nick Clifton wrote:
>> > Okay.  Nick, can you remove it from binutils first?
>> 
>> Done.
>
> Thanks, here is a patch to also remove it from glibc elf.h.
> OK to push?

Yes, please.