Use tf.function's default autograph=True in saved_model/integration_test.

There is currently no demonstrable need to do something non-obvious here.

PiperOrigin-RevId: 259782705

tensorflow/examples/saved_model/integration_tests/export_mnist_cnn.py

@@ -117,7 +117,7 @@ def wrap_keras_model_for_export(model, batch_input_shape,
   # the desired argspec.
   def wrapped(*args, **kwargs):  # TODO(arnoegw): Can we use call_fn itself?
     return call_fn(*args, **kwargs)
-  traced_call_fn = tf.function(autograph=False)(
+  traced_call_fn = tf.function(
       tf_decorator.make_decorator(call_fn, wrapped, decorator_argspec=argspec))
 
   # Now we need to trigger traces for all supported combinations of the

tensorflow/examples/saved_model/integration_tests/export_rnn_cell.py

@@ -37,7 +37,7 @@ def main(argv):
   root.rnn_cell = tf.keras.layers.LSTMCell(units=10, recurrent_initializer=None)
 
   # Wrap the rnn_cell.__call__ function and assign to next_state.
-  root.next_state = tf.function(root.rnn_cell.__call__, autograph=False)
+  root.next_state = tf.function(root.rnn_cell.__call__)
 
   # Wrap the rnn_cell.get_initial_function using a decorator and assign to an
   # attribute with the same name.