message: Update bincount_op_gpu.cu.cc
  remove unreachable codes
diff: @@ -126,7 +126,6 @@ struct BincountFunctor<GPUDevice, Tidx, T, true> {
  return GpuLaunchKernel(BincountReduceKernel<Tidx, T>, config.block_count,
  config.thread_per_block, 0, d.stream(), arr.data(),
  output.data(), nthreads, num_bins);
  - return Status::OK();
  }
  };
  @@ -213,16 +212,14 @@ struct BincountReduceFunctor<GPUDevice, Tidx, T, binary_count> {
  return GpuLaunchKernel(
  BincountColReduceSharedKernel<Tidx, T, binary_count>,
  config.block_count, config.thread_per_block, smem_usage, d.stream(),
  - in.data(), weights.data(), weights.size(), out.data(), num_rows,
  - num_cols, num_bins);
  - } else {
  - return GpuLaunchKernel(
  - BincountColReduceKernel<Tidx, T, binary_count>, config.block_count,
  - config.thread_per_block, 0, d.stream(), in.data(), weights.data(),
  - weights.size(), out.data(), num_rows, num_cols, num_bins);
  + in.data(), weights.data(), weights.size(), out.data(),
  + num_rows, num_cols, num_bins);
  }
  -
  - return Status::OK();
  + return GpuLaunchKernel(
  + BincountColReduceKernel<Tidx, T, binary_count>,
  + config.block_count, config.thread_per_block, 0, d.stream(),
  + in.data(), weights.data(), weights.size(), out.data(),
  + num_rows, num_cols, num_bins);
  }
  };
  