removal of a case that is already included

Signed-off-by: Panagiotis Cheilaris <philaris@cs.ntua.gr>

Segment_Delaunay_graph_Linf_2/include/CGAL/Segment_Delaunay_graph_Linf_2/Voronoi_vertex_sqrt_field_new_C2.h

@@ -2119,10 +2119,6 @@ private:
     Bounded_side bs =
       side_of_bounded_square(p.point(), q.point(), r.point(), t.point());
 
-    if (bs != ON_BOUNDARY) {
-      return (bs == ON_UNBOUNDED_SIDE) ? POSITIVE : NEGATIVE;
-    }
-
     switch(bs) {
       case ON_UNBOUNDED_SIDE:
         CGAL_SDG_DEBUG(std::cout