message: delint and add copyright
diff: +/*
  +Copyright 2019 The Matrix.org Foundation C.I.C.
  +
  +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.
  +*/
  +
  import React from "react";
  import expect from 'expect';
  import Adapter from "enzyme-adapter-react-16";
  @@ -7,7 +23,6 @@ import sdk from "../../../skinned-sdk";
  import {mkEvent, mkStubRoom} from "../../../test-utils";
  import MatrixClientPeg from "../../../../src/MatrixClientPeg";
  import * as languageHandler from "../../../../src/languageHandler";
  -import {sleep} from "../../../../src/utils/promise";
  const TextualBody = sdk.getComponent("views.messages.TextualBody");
  