Fixed clang warnings

• xAODMuonSimHitCnv/xAODSimHitToTgcMeasCnvAlg.cxx removed unused constant
• MuonReadoutGeometryR4/sTgcReadoutElement.h removed unused private data member

This merge request affects 2 packages:

• MuonSpectrometer/MuonPhaseII/MuonCnv/xAODMuonSimHitCnv
• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonReadoutGeometryR4

Affected files list will not be printed in this case

Adding @pscholer ,@stavrop ,@kluit ,@rosati ,@jojungge ,@apsallid as watchers

added MuonSpectrometer main review-pending-level-1 labels

CI Result SUCCESS (hash 4c788940)

	Athena	AthSimulation
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 3781]

Looks good to me. Lucy (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit e0f27fed