Fix up primary keys for a few tables, for efficiency, and so that REPLACE statements will work correctly.
Fix up primary keys for a few tables, for efficiency, and so that
REPLACE statements will work correctly.

Also, remove the few INSERT statements, which will shortly be in
a new file.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome