Clean up `node-template` (#9667)

* Remove dead file

* Remove leftover license header

substrate/bin/node-template/node/src/command.rs

-// This file is part of Substrate.
-
-// Copyright (C) 2017-2021 Parity Technologies (UK) Ltd.
-// SPDX-License-Identifier: Apache-2.0
-
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// 	http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 use crate::{
 	chain_spec,
 	cli::{Cli, Subcommand},

substrate/bin/node-template/node/src/lib.rs

-pub mod chain_spec;
-pub mod rpc;
-pub mod service;