message: Remove IS access token too
diff: @@ -172,6 +172,7 @@ export default class SetIdServer extends React.Component {
  _disconnectIdServer = () => {
  MatrixClientPeg.get().setIdentityServerUrl(null);
  + localStorage.removeItem("mx_is_access_token", fullUrl);
  localStorage.removeItem("mx_is_url");
  this.setState({
  busy: false,
  