remove IO from Mesh_3, since they moved to MDS_3

Mesh_3/doc/Mesh_3/CGAL/IO/File_medit.h

@@ -1,21 +0,0 @@
-namespace CGAL {
-namespace IO {
-/// \ingroup PkgMesh3IOFunctions
-///
-/// \brief outputs a mesh complex to the medit (`.mesh`) file format.
-///        See \cgalCite{frey:inria-00069921} for a comprehensive description of this file format.
-///
-/// \param os the output stream
-/// \param c3t3 the mesh complex
-/// \param rebind if set to `true`, labels of cells are rebinded into `[1..nb_of_labels]`
-/// \param show_patches if set to `true`, patches are labeled with different labels than
-///                     cells. If set to `false`, each surface facet is written twice,
-///                     using the label of each adjacent cell.
-///
-template <class C3T3>
-void output_to_medit(std::ostream& os,
-                     const C3T3& c3t3,
-                     bool rebind = false,
-                     bool show_patches = false);
-
-}} // end namespace CGAL::IO

Mesh_3/doc/Mesh_3/CGAL/IO/output_to_vtu.h

@@ -1,18 +0,0 @@
-namespace CGAL{
-namespace IO {
-//! \ingroup PkgMesh3IOFunctions
-//!
-//! \brief writes a tetrahedron mesh using the `UnstructuredGrid` XML format.
-//!
-//! \tparam C3T3 a model of `MeshComplexWithFeatures_3InTriangulation_3`.
-//!
-//! \param os the stream used for writing.
-//! \param c3t3 the instance of `C3T3` to be written.
-//! \param mode decides if the data should be written in binary (`IO::BINARY`)
-//!   or in ASCII (`IO::ASCII`).
-//!
-template <class C3T3>
-void output_to_vtu(std::ostream& os,
-                   const C3T3& c3t3,
-                   IO::Mode mode = BINARY);
-} }

Mesh_3/doc/Mesh_3/PackageDescription.txt

@@ -132,8 +132,4 @@ and their associated classes:
 
 - `CGAL::Mesh_optimization_return_code`
 - `CGAL::Mesh_facet_topology`
-
-\cgalCRPSection{Input/Output Functions}
-- `CGAL::IO::output_to_medit()` (deprecated)
-- `CGAL::IO::output_to_vtu()`
 */