remove unnecessary assertion
@@ -376,7 +376,6 @@ class Frontend:
if all(edge_visibility):
self.out.draw_path(from_vertices(points), properties)
else:
- assert len(points) - 1 == len(edge_visibility)
for a, b, visible in zip(points, points[1:], edge_visibility):
if visible:
self.out.draw_line(a, b, properties)
