Remove the getpagesize system call from ia64

[Ulrich Drepper]

"H . J . Lu" <hjl@valinux.com> writes:

> AT_PAGESZ works on the current ia64 kernel. There is no need for the
> getpagesize system call since it is not used by ia64 and it may be
> removed from the ia64 kernel in the future.

Done.

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