Dropped unused class PrMuonStubAssociator
and remaining usage of MuonPad2MCTool
Part of MR set LHCb!3823 (merged) Lbcom!633 (merged) !3153 (merged)
and remaining usage of MuonPad2MCTool
Part of MR set LHCb!3823 (merged) Lbcom!633 (merged) !3153 (merged)