message: remove not used variables in static kernels
diff: @@ -1109,8 +1109,6 @@ void fft_512(T *twiddles, T *lwb_in, T *lwb_out, real_type_t<T> *lds, const ui
  if(dir == -1)
  {
  - T W;
  - real_type_t<T> TR, TI;
  TWIDDLE_MUL_FWD(twiddles, 7 + 7*(me%8) + 0, X1)
  TWIDDLE_MUL_FWD(twiddles, 7 + 7*(me%8) + 1, X2)
  