Resolve "Work on const / non-const in wolf base classes"

Closes #184 (closed)

include/core/processor/track_matrix.h

@@ -142,13 +142,9 @@ class TrackMatrix
 
         // tracks across all Captures
         map<SizeStd, Track > tracks_;       // map indexed by track_Id   of ( maps indexed by TimeStamp  of ( features ) )
-        map<SizeStd, TrackConst > tracks_const_;       // map indexed by track_Id   of ( maps indexed by TimeStamp  of ( features ) )
-//        // tracks across captures that belong to keyframe
-//        map<size_t, Track > tracks_kf_;    // map indexed by track_Id   of ( maps indexed by TimeStamp  of ( features ) )
 
         // Across track: maps of Feature pointers indexed by track_Id.
         map<CaptureBasePtr, Snapshot > snapshots_; // map indexed by capture_ptr of ( maps indexed by track_Id of ( features ) )
-        map<CaptureBaseConstPtr, SnapshotConst > snapshots_const_; // map indexed by capture_ptr of ( maps indexed by track_Id of ( features ) )
 };
 
 } /* namespace wolf */