Retire the MPW support from toplevel and binutils

[Ian Lance Taylor]

Stan Shebs <shebs@apple.com> writes:

> GNU support for MPW (Macintosh Programmer's Workshop) stopped working
> some years ago, and has long since been flushed from GCC and GDB. So
> I'm going to save everybody some disk space and remove the support bits
> from the rest of src/, starting with this patch to the top level,
> preapproved by DJ. (If a binutils maintainer would like to preapprove
> the necessary binutils patches, that would be efficient.)

By all means.  Preapproved for binutils.  Thanks.

Remember that libiberty bits should go into the gcc repository first
or simultaneously.  Those bits are also pre-approved (if DJ didn't
already approve them).

Ian