cpplint check

mace/kernels/opencl/depth_to_space_opencl.cc

@@ -21,7 +21,6 @@ void DepthToSpaceOpFunctor<DeviceType::OPENCL, T>::operator()(
   const index_t input_depth = input->dim(3);
 
   const char *kernel_name = nullptr;
-  index_t kernel_width = input_width;
 
   index_t output_height, output_width, output_depth;
   if (d2s_) {
@@ -29,13 +28,11 @@ void DepthToSpaceOpFunctor<DeviceType::OPENCL, T>::operator()(
     output_width = input_width * block_size_;
     output_depth = input_depth / (block_size_ * block_size_);
     kernel_name = "depth_to_space";
-    kernel_width = output_width;
   } else {
     output_height = input_height / block_size_;
     output_width = input_width / block_size_;
     output_depth = input_depth * block_size_ * block_size_;
     kernel_name = "space_to_depth";
-    kernel_width = input_width;
   }
   const index_t input_depth_blocks = RoundUpDiv4(input_depth);
   const index_t output_depth_blocks = RoundUpDiv4(output_depth);