remove dead code

void RanMars::select_subset(bigint ntarget, int nmine, int *mark, int *next)

{

  int mode,index,oldindex,newvalue,nflip,which,niter;

  int active[2],first[2],last[2];

  int active[2],first[2];

  int newactive[2],newfirst[2],newlast[2];

  bigint nmark,nflipall;

  bigint activeall[2],bsum[3],bsumall[3];

  active[1] = 0;

  first[0] = 0;

  first[1] = -1;

  last[0] = nmine-1;

  last[1] = -1;

  bigint bnmine = nmine;

  bigint bnall;

      active[1] = newactive[1];

      first[0] = newfirst[0];

      first[1] = newfirst[1];

      last[0] = newlast[0];

      last[1] = newlast[1];

    }

    // update nmark and activeall