[RFA/RFC/IRIX] Remove some deprecated_registers from irix5-nat.c

[Joel Brobecker]

> You should consider a patch fixing fallout from the deletion of 
> deprecated_registers as "obvious".
> 
> >2004-11-13  Joel Brobecker  <brobecker@gnat.com>
> >
> >        * irix5-nat.c (fill_gregset): Replace use of deprecated_registers
> >        with equivalent code.
> >        (fill_fpregset): Likewise.
> >

Thanks, checked in.

-- 
Joel