message: discard propTypes some more
diff: @@ -15,9 +15,8 @@ See the License for the specific language governing permissions and
  limitations under the License.
  */
  -import * as React from 'react';
  -import * as ReactDOM from 'react-dom';
  -import * as PropTypes from 'prop-types';
  +import React from 'react';
  +import ReactDOM from 'react-dom';
  import classNames from 'classnames';
  import flatMap from 'lodash/flatMap';
  import {ICompletion, ISelectionRange, IProviderCompletions} from '../../../autocomplete/Autocompleter';
  @@ -31,10 +30,14 @@ const COMPOSER_SELECTED = 0;
  export const generateCompletionDomId = (number) => `mx_Autocomplete_Completion_${number}`;
  interface IProps {
  + // the query string for which to show autocomplete suggestions
  query: string;
  + // method invoked with range and text content when completion is confirmed
  onConfirm: (ICompletion) => void;
  + // method invoked when selected (if any) completion changes
  onSelectionChange?: (ICompletion, number) => void;
  selection: ISelectionRange;
  + // The room in which we're autocompleting
  room: Room;
  }
  @@ -48,20 +51,6 @@ interface IState {
  }
  export default class Autocomplete extends React.PureComponent<IProps, IState> {
  - static propTypes = {
  - // the query string for which to show autocomplete suggestions
  - query: PropTypes.string.isRequired,
  -
  - // method invoked with range and text content when completion is confirmed
  - onConfirm: PropTypes.func.isRequired,
  -
  - // method invoked when selected (if any) completion changes
  - onSelectionChange: PropTypes.func,
  -
  - // The room in which we're autocompleting
  - room: PropTypes.instanceOf(Room),
  - };
  -
  autocompleter: Autocompleter;
  queryRequested: string;
  debounceCompletionsRequest: NodeJS.Timeout;
  