Drop callback of SiTrackMaker_xk (ATLASRECTS-4729)
The callback of SiTrackMaker_xk was dropped.
IMagFieldSvc is fully directly used in SiTrackMaker_xk.
https://its.cern.ch/jira/browse/ATLASRECTS-4729
RunTier0Tests.py was fine. RunTier0Tests.log
Edited by Susumu Oda