Delete reference to legacy config in InDetPRDToxAOD

InnerDetector/InDetEventCnv/InDetPrepRawDataToxAOD/doc/TRT.txt

-This tools is inspired on:
-MuonSpectrometer/MuonCnv/MuonPrepRawDataToxAOD
-
-To run, you have to have flag:
-
-rec.doAOD=True
-InDetFlags.doxAOD.set_Value_and_Lock()
-
-Then, in: InnerDetector/InDetExample/InDetRecExample/share/WriteInDetAOD.py
-Add:
-if InDetFlags.doxAOD():
-  InDetAODList += ['xAOD::PrepRawDataContainer_v1#TRT_DriftCircles']
-  InDetAODList += ['xAOD::PrepRawDataAuxContainer_v1#TRT_DriftCirclesAux.']
-
-In: InnerDetector/InDetExample/InDetRecExample/share/InDetxAODCreator.py
-
-from TRT_ConditionsServices.TRT_ConditionsServicesConf import
-TRT_StrawNeighbourSvc
-TRTStrawNeighbourSvc=TRT_StrawNeighbourSvc()
-ServiceMgr += TRTStrawNeighbourSvc
-
-from TRT_ConditionsServices.TRT_ConditionsServicesConf import TRT_CalDbSvc
-TRTCalibDBSvc=TRT_CalDbSvc()
-ServiceMgr += TRTCalibDBSvc
-
-from InDetPrepRawDataToxAOD.InDetPrepRawDataToxAODConf import
-TRT_PrepDataToxAOD
-xAOD_TRT_PrepDataToxAOD = TRT_PrepDataToxAOD( name =
-"xAOD_TRT_PrepDataToxAOD")
-xAOD_TRT_PrepDataToxAOD.OutputLevel=DEBUG
-print "Add TRT xAOD PrepRawData:"
-print xAOD_TRT_PrepDataToxAOD
-topSequence += xAOD_TRT_PrepDataToxAOD
-
-
-
-