Move readv and writev definitions to syscalls.list (bug 14138)

[Andreas Schwab]

"Joseph S. Myers" <joseph@codesourcery.com> writes:

> The relevant syscalls.list entries were already in
> sysdeps/unix/syscalls.list, but to match the C files they needed to
> have the names __libc_readv and __libc_writev added.  In fact, I don't
> see anything making use of those names - as far as I can tell, these
> functions could just be defined as __readv and __writev with aliases
> readv and writev.

Since they are obviously unused, just remove them.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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