message: tweak leave space on preview
diff: @@ -154,7 +154,6 @@ const SpacePreview = ({ space, onJoinButtonClicked, onRejectButtonClicked }) =>
  <AccessibleButton
  kind="danger"
  onClick={() => {
  - setBusy(true);
  dis.dispatch({
  action: "leave_room",
  room_id: space.roomId,
  