revert test_softmax_cudnn. test=develop

python/paddle/fluid/tests/unittests/mkldnn/test_softmax_mkldnn_op.py

@@ -32,30 +32,6 @@ class TestSoftmaxMKLDNNOp2(TestSoftmaxMKLDNNOp):
         return [2, 3, 4, 5]
 
 
-class TestSoftmaxMKLDNNOp2(TestSoftmaxMKLDNNOp):
-    def get_x_shape(self):
-        return [2, 3, 4, 5]
-
-    def get_axis(self):
-        return 0
-
-
-class TestSoftmaxMKLDNNOp2(TestSoftmaxMKLDNNOp):
-    def get_x_shape(self):
-        return [2, 3, 4, 5]
-
-    def get_axis(self):
-        return 1
-
-
-class TestSoftmaxMKLDNNOp2(TestSoftmaxMKLDNNOp):
-    def get_x_shape(self):
-        return [2, 3, 4, 5]
-
-    def get_axis(self):
-        return 2
-
-
 # Check if primitives already exist in backward
 class TestSoftmaxMKLDNNPrimitivesAlreadyExist(unittest.TestCase):
     def setUp(self):