Revert "Include des_crypt in build"

Revert "Include des_crypt in build"

The des_crypt code requires the crypt_client code (which wasn't
added), and that code requires a currently undefined function
(namely xdr_desresp).  Since I have no idea what that's about,
and this change ends up breaking some systems, just revert it.

Once we have a patch that improves portability without breaking
existing systems, we can revisit this.

This reverts commit 9bdcba10aa67ce3f67810c7aaac944a00dcfcee5.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Steve Dickson <steved@redhat.com>