diff --git a/testdata/polygon-illegal-winding.scad b/testdata/polygon-illegal-winding.scad
deleted file mode 100644
index 612154a7..00000000
--- a/testdata/polygon-illegal-winding.scad
+++ /dev/null
@@ -1,15 +0,0 @@
-polyhedron
-  (points = [
-         [0, -10, 60], [0, 10, 60], [0, 10, 0], [0, -10, 0], [60, -10, 
-60], [60, 10, 60],
-         [10, -10, 50], [10, 10, 50], [10, 10, 30], [10, -10, 30], [30, 
--10, 50], [30, 10, 50]
-         ],
-   triangles = [
-        [0,2,3],   [0,1,2],  [0,4,5],  [0,5,1],   [5,4,2],  [2,4,3],
-                [6,8,9],  [6,7,8],  [6,10,11], [6,11,7], [10,8,11],
-        [10,9,8], [0,3,9],  [9,0,6], [10,6, 0],  [0,4,10],
-                [3,9,10], [3,10,4], [1,7,11],  [1,11,5], [1,7,8], 
-                [1,8,2],  [2,8,11], [2,11,5]
-        ]
-   );