HGTD_G4_SD → InnerDetector Relation

File in HighGranularityTimingDetector/HGTD_G4/HGTD_G4_SD	Includes file in InnerDetector
src / HGTDSensorGmxSD.cxx	InDetSimEvent / InDetSimEvent / SiHitIdHelper.h
src / HGTDSensorGmxSD.h	InDetSimEvent / InDetSimEvent / SiHitCollection.h
src / HGTDSensorSD.h	InDetSimEvent / InDetSimEvent / SiHitCollection.h