Can not import relay in tvm runtime

I just saw that some people use relay.load_param_dict during the inference:

params = relay.load_param_dict(bytearray(open(path_param, "rb").read()))
m.set_input(**params)

we can probably replace it with

params = bytearray(open(path_param, "rb").read())
m.load_params(params)

What you think?