remove a test that fail for not implemented feature as the original case is now…

theano/sandbox/cuda/tests/test_tensor_op.py

@@ -105,28 +105,3 @@ def test_may_share_memory_cuda():
             raise Exception("An error was expected")
         except TypeError:
             pass
-
-
-def test_grad_sqrt_sum():
-    """
-    This trigered a bug in the past.
-    """
-    I = T.ftensor4().reshape((1,1,28,28))
-
-    W = cuda.shared_constructor(numpy.asarray(
-            numpy.random.random((1,1,10,10)),dtype='float32'))
-
-    C = T.sqrt(T.sum(W[:,:,1:1,1:1]**2))# This line was causing a bug.
-    #C = T.sqrt(T.sum(W[:,:,1:2,1:2]**2))# This line work
-
-    g = T.grad(C, W)
-
-    bog = theano.function([I], C,
-                          updates = {W:W-g}, mode=mode_with_gpu)
-
-    theano.printing.debugprint(bog)
-    print bog.maker.env.toposort()
-
-    print "BEFORE"
-    bog(numpy.asarray(numpy.ones((1,1,28,28)),dtype='float32'))
-    print "AFTER"