remove Default

theano/tensor/basic.py

@@ -3416,14 +3416,6 @@ class Default(gof.Op):
         else:
             out[0] = x
 
-    def infer_shape(self, node, in_shapes):
-        if node.inputs[0] is None:
-            out_shape = in_shapes[1]
-        else:
-            out_shape = in_shapes[0]
-        return [out_shape]
-
-
 default = Default()
 setdefault = default  # legacy
 

theano/tensor/tests/test_basic.py

@@ -6086,11 +6086,6 @@ class TestInferShape(utt.InferShapeTester):
                                 [Shape()(adtens)],
                                 [adtens_val], (opt.MakeVector, Shape))
 
-        # Default
-        self._compile_and_check([admat, bdmat],
-                                [Default()(admat, bdmat)],
-                                [admat_val, bdmat_val], (Default))
-
         # Dot
         advec = dvector()
         bdvec = dvector()