Remove redundant p_coords in CUDA self vector scatter dev

src/core/scatter_devices/cuda/self_vectors_cuda_scatter_device.cuh

@@ -69,7 +69,6 @@ protected:
 
     // first = qvec index, second = atomindex
     // Allocated by the data stager (must free ourselves)
-    coor_t *p_coordinates;
     size_t coord_size_ = 0;
 
     std::atomic<size_t> current_atomindex_ = 0;