Remove deprecated CellDataTransferBuffer

doc/news/changes/incompatibilities/20230629DanielArndt

@@ -0,0 +1,3 @@
+Removed: The deprecated GridTools::CellDataTransferBuffer class has been removed.
+<br>
+(Daniel Arndt, 2023/06/29)

include/deal.II/grid/grid_tools.h

@@ -3615,106 +3615,6 @@ namespace GridTools
   compute_vertices_with_ghost_neighbors(
     const Triangulation<dim, spacedim> &tria);
 
-  /**
-   * A structure that allows the transfer of cell data of type @p T from one processor
-   * to another. It corresponds to a packed buffer that stores a vector of
-   * CellId and a vector of type @p T.
-   *
-   * This class facilitates the transfer by providing the save/load functions
-   * that are able to pack up the vector of CellId's and the associated
-   * data of type @p T into a stream.
-   *
-   * Type @p T is assumed to be serializable by <code>boost::serialization</code> (for
-   * example <code>unsigned int</code> or <code>std::vector@<double@></code>).
-   *
-   * @deprecated The implementation in deal.II has been rewritten, making this class
-   * obsolete for use within deal.II. Use your own data structures instead.
-   */
-  template <int dim, typename T>
-  struct DEAL_II_DEPRECATED CellDataTransferBuffer
-  {
-    /**
-     * A vector to store IDs of cells to be transferred.
-     */
-    std::vector<CellId> cell_ids;
-
-    /**
-     * A vector of cell data to be transferred.
-     */
-    std::vector<T> data;
-
-    /**
-     * Write the data of this object to a stream for the purpose of
-     * serialization using the [BOOST serialization
-     * library](https://www.boost.org/doc/libs/1_74_0/libs/serialization/doc/index.html)
-     *
-     * @pre The user is responsible to keep the size of @p data
-     * equal to the size as @p cell_ids .
-     */
-    template <class Archive>
-    void
-    save(Archive &ar, const unsigned int) const
-    {
-      // Implement the code inline as some compilers do otherwise complain
-      // about the use of a deprecated interface.
-      Assert(cell_ids.size() == data.size(),
-             ExcDimensionMismatch(cell_ids.size(), data.size()));
-      // archive the cellids in an efficient binary format
-      const std::size_t n_cells = cell_ids.size();
-      ar &              n_cells;
-      for (const auto &id : cell_ids)
-        {
-          CellId::binary_type binary_cell_id = id.template to_binary<dim>();
-          ar &                binary_cell_id;
-        }
-
-      ar &data;
-    }
-
-    /**
-     * Read the data of this object from a stream for the purpose of
-     * serialization using the [BOOST serialization
-     * library](https://www.boost.org/doc/libs/1_74_0/libs/serialization/doc/index.html).
-     * Throw away the previous content.
-     */
-    template <class Archive>
-    void
-    load(Archive &ar, const unsigned int)
-    {
-      // Implement the code inline as some compilers do otherwise complain
-      // about the use of a deprecated interface.
-      std::size_t n_cells;
-      ar &        n_cells;
-      cell_ids.clear();
-      cell_ids.reserve(n_cells);
-      for (unsigned int c = 0; c < n_cells; ++c)
-        {
-          CellId::binary_type value;
-          ar &                value;
-          cell_ids.emplace_back(value);
-        }
-      ar &data;
-    }
-
-
-#ifdef DOXYGEN
-    /**
-     * Read or write the data of this object to or from a stream for the
-     * purpose of serialization using the [BOOST serialization
-     * library](https://www.boost.org/doc/libs/1_74_0/libs/serialization/doc/index.html).
-     */
-    template <class Archive>
-    void
-    serialize(Archive &archive, const unsigned int version);
-#else
-    // This macro defines the serialize() method that is compatible with
-    // the templated save() and load() method that have been implemented.
-    BOOST_SERIALIZATION_SPLIT_MEMBER()
-#endif
-  };
-
-
-
   /**
    * An implementation of the marching-square (2d) and marching-cube algorithm
    * for creating data structures (vectors of Point and CellData) to