diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Side_of_triangle_mesh/AABB_triangle_accessor_3_primitive.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Side_of_triangle_mesh/AABB_triangle_accessor_3_primitive.h
deleted file mode 100644
index 0fe50029f55..00000000000
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/internal/Side_of_triangle_mesh/AABB_triangle_accessor_3_primitive.h
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright (c) 2013 GeometryFactory (France).
-// All rights reserved.
-//
-// This file is part of CGAL (www.cgal.org).
-// You can redistribute it and/or modify it under the terms of the GNU
-// General Public License as published by the Free Software Foundation,
-// either version 3 of the License, or (at your option) any later version.
-//
-// Licensees holding a valid commercial license may use this file in
-// accordance with the commercial license agreement provided with the software.
-//
-// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
-// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-//
-// $URL$
-// $Id$
-// SPDX-License-Identifier: GPL-3.0+
-// 
-//
-// Author(s)     : Ilker O. Yaz
-
-#ifndef CGAL_POINT_INSIDE_POLYHEDRON_AABB_TRIANGLE_ACCESSOR_3_PRIMITIVE_H
-#define CGAL_POINT_INSIDE_POLYHEDRON_AABB_TRIANGLE_ACCESSOR_3_PRIMITIVE_H
-
-#include <CGAL/license/Polygon_mesh_processing/miscellaneous.h>
-
-
-namespace CGAL {
-namespace internal {
-
-template<typename GeomTraits, typename TriangleAccessor_3>
-class AABB_triangle_accessor_3_primitive
-{
-public:
-  typedef typename GeomTraits::Point_3                 Point;
-  typedef typename TriangleAccessor_3::Triangle_handle Id;
-  typedef typename GeomTraits::Triangle_3              Datum;
-  typedef Datum Datum_reference;
-  typedef Point Point_reference;
-  typedef TriangleAccessor_3 Shared_data;
-
-  AABB_triangle_accessor_3_primitive(const Id& handle, Shared_data)
-  : m_triangle_handle(handle) { }
-
-  Datum_reference datum(Shared_data t3_accessor) const
-  { return t3_accessor.triangle(m_triangle_handle); }
-  Point_reference reference_point(Shared_data t3_accessor) const
-  { return datum(t3_accessor).vertex(0); }
-
-  const Id& id() const { return m_triangle_handle; }
-  Id& id() { return m_triangle_handle; }
-
-  static Shared_data construct_shared_data(Shared_data data) {return data;}
-private:
-  Id m_triangle_handle;
-};  
-
-}// namespace internal
-}// namespace CGAL
-
-
-#endif // CGAL_POINT_INSIDE_POLYHEDRON_AABB_TRIANGLE_ACCESSOR_3_PRIMITIVE_H