Remove rpm, as we don't provide a compelete linux system (use linux_dist
if you need one). rpm2cpio(.pl)+port (it's easy, there are several examples
in the ports tree) is the FreeBSD way.
Note, rpm didn't work anyway because of missing libs, so no feature is lost
with this patch.
Non working rpm noticed by: Anders Lindquist <andersl@KTH.SE>
XXX: fc6 needs a similar fix