Remove explicit server stop

Stopping the remote-processor in the stop command has two side effect:
 - stopping the remote-processor thread will fail as it is not possible
   to join a thread to itself. This leads to the leak of all the thread
   object (destructor not called).
 - the server will not return the exit command status as it has been
   stopped during it's execution.

Remove the remote-processor stop as it will be called during it's
destruction.

Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>