Delete copy of SharedVariable's storage, for they should have same value among different function

theano/compile/function_module.py

@@ -589,9 +589,6 @@ class Function(object):
         # Copy Ins and their storage.
         # so that they have different storage as their value
         ins = [copy.copy(input) for input in maker.inputs]
-        for in_cpy, in_ori in zip(ins, maker.inputs):
-            if in_ori.mutable:
-                in_cpy.value = copy.deepcopy(in_ori.value)
 
         # Delete update output in fgraph and updates In instances if needed
         if delete_updates:

theano/compile/tests/test_function_module.py

@@ -268,13 +268,6 @@ class T_function(unittest.TestCase):
                 if key not in i_o_variables or isinstance(key, theano.tensor.Constant):
                     self.assertTrue(any([ storage is s for s in ori_storages]))
 
-            # Assert storages of SharedVariable without updates are shared
-            for (input, _1, _2), here, there in zip(ori.indices,
-                                                    ori.input_storage,
-                                                    cpy.input_storage):
-                if input.mutable:
-                    self.assertFalse(here.data is there.data)
-
     def test_swap_SharedVariable(self):
         x = T.fscalar('x')
         # SharedVariable for tests, one of them has update