Remove every last vestige of the old RegSelSvc class and the related RegionSelectorTable classes
Having replaced all the use of the old RegSelSvc but the new component specific RegSelTools and their related RegSelCondAlgs, we can now remove the remaining RegSelSvc code, and the componenet specific code for each RegionSelectorTable class, ie
InnerDetector/InDetDetDescr/InDetRegionSelector MuonSpectrometer/MuonDetDescr/MuonRegionSelector
The LAR and TileCal code was already modified by Denis, so no changes needed for
LArCalorimeter/LArRegionSelector TileCalorimeter/TileRawUtils
Relates to ATR-19657, and replaces !41361 (closed)