remove excluding condition

Thanks to Javier Granado for the hint

closes #2247

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1114 fdac6126-5c0c-442c-9429-916003d36597
exposed nested types: point, normal, color, etc.

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1115 fdac6126-5c0c-442c-9429-916003d36597