Remove every last vestige of the FTK from the RegionSelector code
Remove FTK traces from the RegionSelector code, as discussed in https://its.cern.ch/jira/browse/ATLASRECTS-5877
Edited by Mark Sutton
Remove FTK traces from the RegionSelector code, as discussed in https://its.cern.ch/jira/browse/ATLASRECTS-5877