remove Brunel PGunRecoSeqRun2 in favor of deeper changes in Rec
Deprecate in favor of using standard $APPCONFIGOPTS/Brunel/pGun-Signal.py $APPCONFIGOPTS/Persistency/PropagatePgunVertex.py
for productions.
Deprecate in favor of using standard $APPCONFIGOPTS/Brunel/pGun-Signal.py $APPCONFIGOPTS/Persistency/PropagatePgunVertex.py
for productions.