Remove HSFlag all for ART IDPVM mu0 config

Should clean error messages like

https://bigpanda.cern.ch//media/filebrowser/241127c2-3b1e-4cb5-9ef4-f103271d65b1/group.art/tarball_PandaJob_6308345733_UKI-SCOTGRID-GLASGOW_CEPH/payload.stdout

PhysValMonManager.InDe...dTracksActsValidateTracks  ERROR No entries in TruthPileupEvents container!