These packages have either been retired or are no longer retrievable from
any site we can find. They also aren't needed by other packages, so we're
removing them from Spack.
- allinea-reports: is now arm performance reports
- globus-toolkit: retired, globus is now a paid service.
- uberftp: used globus-toolkit, github site is retired.
- mpiblast: site is dead; no longer fetchable.
- py-mxnet: site and github are gone
- soap2, soapindel, soapsnp: site is gone, unfetchable
- arlecore: could not verify md5 securely