remove nonexistant node from launch file

launch/simulation.launch

@@ -47,9 +47,6 @@
 
     <node name="joint_state_desired_publisher" pkg="topic_tools" type="relay" args="joint_states joint_states_desired" />
 
-    <!-- launch robot control node for moveit motion planning -->
-    <node pkg="panda_simulation" type="robot_control_node" name="robot_control_node" output="screen" />
-
     <!-- load (not start!) custom joint position controller -->
     <node pkg="controller_manager" type="spawner" name="joint_position_launcher" args="--stopped joint_position_controller" />