# File lib/ruote/svc/tracker.rb, line 94
    def remove_tracker(fei_sid_or_id, wfid=nil)

      tracker_id =
        if fei_sid_or_id.is_a?(String)
          fei_sid_or_id
        else
          Ruote.to_storage_id(fei_sid_or_id)
        end

      remove([ tracker_id ], wfid)
    end