message: frontend: Removes unused proptypes
diff: import * as React from 'react';
  -import * as PropTypes from 'prop-types';
  import {LoadingInline, MultiFirehose, determineOperatorState, StatusBox} from '../utils';
  import {AppVersionDetails} from './app-version';
  @@ -97,9 +96,6 @@ export class TectonicChannel extends SafetyFirst {
  </MultiFirehose>;
  }
  }
  -TectonicChannel.propTypes = {
  - last: PropTypes.bool
  -};
  class TectonicChannelWithData extends React.Component {
  constructor(props) {
  