Updates to the FTag Physval code.

Several smaller updates to the FTag Physval code.

• remove TProfiles
  We've never used them for double checks (as we had anticipated when keeping them in) and they lead to confusion more than once now (since they're marked red sometimes even if the input vars show perfect agreement).
• re-activate muon information
  The btag object in the DAODs is actually not decorated with the muon information, but there is the BTagMuonAugmenter tool that is also used in the training-dataset-dumper for decorating.
  Run this tool also here and use the decorated muon link.
• Remove MSV vars.
  (They're not in the DAODs anyways.)

tagging @duperrin and @bdong.