Remove a commented mutable data member of IDAlignMonGenericTracks
http://goetz.web.cern.ch/goetz/mutable_2019-06-10.html#Monitoring,Mon,DQ
nightly/master/2019-06-10T2153:InnerDetector/InDetMonitoring/InDetAlignmentMonitoring/src/IDAlignMonGenericTracks.h +402
400 const xAOD::Vertex* findAssociatedVertexTP(const xAOD::TrackParticle *) const;
401
402 //mutable std::map<const Trk::Track*, const Trk::VxCandidate* > m_trackVertexMap;
403 mutable std::map<const xAOD::TrackParticle*, const xAOD::Vertex* > m_trackVertexMapTP;
404