message: remove a ping
diff: @@ -919,7 +919,6 @@ namespace ospray {
  void DFB::sendCancelRenderingMessage()
  {
  - PING;
  // WILL: Because we don't have a threaded MPI and the master
  // in replicated rendering will just be waiting in the bcast when
  // we call cancel, the message would never actually be sent out this
  