[patch] purge obseleted configurations, top level

[DJ Delorie]

Sorry, these are still supported by binutils.

> 2002-05-27  Nathanael Nerode  <neroden@twcny.rr.com>
> 	* configure.in: Purge some obselete configurations.
>
> -   arm-*-riscix*)
> -   m68k-apollo-*)
> -   mips*-dec-bsd*)
> -   mips*-*-bsd*)
>     romp-*-*)
> +     # should be deleted after GCC 3.2 unless support is reenabled