TrigT1Monitoring: delete legacy monitoring tools

Delete legacy monitoring tools based on ManagedMonitorToolBase, i.e.:

LVL1::L1CaloCTPMon
LVL1::L1CaloL1TopoMon
LVL1::L1CaloLevel2Mon
LVL1::CalorimeterL1CaloMon
LVL1::L1CaloPMTScoresMon

These tools don't seem to be used anywhere.

cc @will @mwessels @thompson