This reverts commit f55ffabbe0.
In the exuder, it can happen that this function takes the triple
(Vertex_handle(), Vertex_handle(), Vertex_handle())
so the assertion does not hold
This reverts commit f55ffabbe0.
In the exuder, it can happen that this function takes the triple
(Vertex_handle(), Vertex_handle(), Vertex_handle())
so the assertion does not hold