message: Fix GPU compilation.
diff: @@ -110,22 +110,13 @@ GKO_INSTANTIATE_FOR_EACH_VALUE_AND_INDEX_TYPE(
  template <typename ValueType, typename IndexType>
  -void convert_to_coo(std::shared_ptr<const GpuExecutor> exec,
  +void convert_row_ptrs_to_idxs(std::shared_ptr<const GpuExecutor> exec,
  matrix::Coo<ValueType, IndexType> *result,
  const matrix::Csr<ValueType, IndexType> *source)
  NOT_IMPLEMENTED;
  GKO_INSTANTIATE_FOR_EACH_VALUE_AND_INDEX_TYPE(
  - GKO_DECLARE_CSR_CONVERT_TO_COO_KERNEL);
  -
  -
  -template <typename ValueType, typename IndexType>
  -void move_to_coo(std::shared_ptr<const GpuExecutor> exec,
  - matrix::Coo<ValueType, IndexType> *result,
  - matrix::Csr<ValueType, IndexType> *source) NOT_IMPLEMENTED;
  -
  -GKO_INSTANTIATE_FOR_EACH_VALUE_AND_INDEX_TYPE(
  - GKO_DECLARE_CSR_MOVE_TO_COO_KERNEL);
  + GKO_DECLARE_CSR_CONVERT_ROW_PTRS_TO_IDXS_KERNEL);
  template <typename ValueType, typename IndexType>
  