message: Remove original fn call
diff: @@ -481,7 +481,6 @@ def map_fn(fn,
  elems_value = elems_unflatten(elems_value_flat)
  autographed_fn = autograph.tf_convert(fn, autograph_ctx.control_status_ctx())
  result_value = autographed_fn(elems_value)
  - result_value = fn(elems_value)
  nest.assert_same_structure(fn_output_signature or elems, result_value)
  result_value_flat = nest.flatten(result_value)
  result_value_batchable = _result_value_flat_to_batchable(
  