message: remove unneeded async keywords
diff: @@ -168,7 +168,7 @@ module.exports = React.createClass({
  }
  },
  - onRoom: async function(room) {
  + onRoom: function(room) {
  if (room.roomId !== this.props.roomId) {
  return;
  }
  @@ -182,7 +182,7 @@ module.exports = React.createClass({
  this._loadMembersIfNeeded();
  },
  - onRoomMembership: async function(ev, member, oldMembership) {
  + onRoomMembership: function(ev, member, oldMembership) {
  const cli = MatrixClientPeg.get();
  const myId = cli.getUserId();
  if (member.userId === myId && oldMembership !== "join" && member.membership === "join") {
  