Get rid of reference files for o3-atomic (non-existent configuration)
and mcf (doesn't seem to be working).
Left in empty refs for parser/simple-timing... this appears to be
dying because it's running out of memory, so maybe it will be OK
once we get the memory leak fixed.
--HG--
extra : convert_revision : ae3bc8dfec44d09a2a084da5041ec386fe16be8b
