remove unused variables from fix_cmap

void FixCMAP::pre_neighbor()

{

  int i,m,itype,atom1,atom2,atom3,atom4,atom5;

  int i,m,atom1,atom2,atom3,atom4,atom5;

  // guesstimate initial length of local crossterm list

  // if ncmap was not set (due to read_restart, no read_data),

  // use the bicubic spline to calculate the derivatives

  int i, j, k, ii, jj, xm, p;

  double phi, psi, y, d1y, d2y, d12y, tyyk,tdyk;

  double phi, psi, d1y, d2y, d12y, tyyk,tdyk;

  double *tmp_y, *tmp_dy, *tmp_ddy, **tmap, **tddmap;

  int ix;

  double a,b,a1,b1,a2,b2;

  xm = CMAPDIM/2;

  p = CMAPDIM;

  y = 0.;

  d1y = 0.;

  d2y = 0.;

  d12y = 0.;

      b1 = b*b*b-b;

      a2 = 3.0*a*a-1.0;

      b2 = 3.0*b*b-1.0;

      y = a*tmp_y[ix]+b*tmp_y[ix+1]+

        (a1*tmp_ddy[ix]+b1*tmp_ddy[ix+1])*(CMAPDX*CMAPDX)/6.0;

      d1y = (tmp_y[ix+1]-tmp_y[ix])/CMAPDX-

        a2/6.0*CMAPDX*tmp_ddy[ix]+b2/6.0*CMAPDX*tmp_ddy[ix+1];

      spline(tmp_dy,tmp_ddy,CMAPDIM+xm+xm);

  //   gradients and cross-derivatives

  // calculate the interpolated value of the point of interest (POI)

  int i, p=12;

  double t, u, fac, gs1l, gs2l, gs1u, gs2u;

  int i;

  double t, u, gs1l, gs2l;

  // set the interpolation coefficients