Clean up unused properties in InDetAmbiTrackSelectionTool

Thomas Streblerrequested to merge
tstreble/athena:AmbiTrackSelToolClean into 23.0

Self-explanatory. Follow up to !39195 (merged) and !52633 (merged)

Run 3 and Run 4 outputs unchanged.

FYI @goblirsc @goetz

Merge request reports