Check if removed comments are needed.

[SabaAflaki]

Tracker.cpp:
commented lines are deleted:

          if(vKeyframeScores.size()>0)
        {
             double bestSortIndex = vKeyframeScores[0].second;
          //int k_itr = 1;
           //while( bestSortIndex < vKeyframeScores.size())
            //{
            //    bestSortIndex = vKeyframeScores[k_itr].second;
            //    k_itr++;
             //} //todo (adas) get rid of this, turn into circular buffer, this is a hack!

[SabaAflaki]

Can I close this issue @arunxdas ? It looks like we don't need the commented code.