make test faster in debug mode

theano/tensor/signal/tests/test_downsample.py

@@ -124,9 +124,11 @@ class TestDownsampleFactorMax(unittest.TestCase):
                 g = tensor.grad(c, images)
                 g_val = function([images], [g.shape, tensor.min(tensor.min(tensor.min(g))), tensor.max(tensor.max(tensor.max(g)))])(imval)
 
-                def mp(input):
-                    return max_pool2D(input, maxpoolshp, ignore_border)
-                utt.verify_grad(mp, [imval], rng=rng)
+#removed as already tested in test_max_pool2D_2D and test_max_pool2D_6D
+#This make test in debug mode too slow.
+#                def mp(input):
+#                    return max_pool2D(input, maxpoolshp, ignore_border)
+#                utt.verify_grad(mp, [imval], rng=rng)
 
 
     def test_max_pool2D_6D(self):