message: removed unused headers in control node
diff: // Copyright (c) 2017 Franka Emika GmbH
  // Use of this source code is governed by the Apache-2.0 license, see LICENSE
  #include <algorithm>
  -#include <array>
  #include <atomic>
  -#include <string>
  -#include <utility>
  #include <actionlib/server/simple_action_server.h>
  #include <controller_manager/controller_manager.h>
  