Solved a bug in the add_servo() function when checking the already assigned servos.

Removed the servo assignment from the action and walk clients because it is already done by the corresponding modules.

action_client/src/action_client_alg_node.cpp

@@ -19,8 +19,6 @@ ActionClientAlgNode::ActionClientAlgNode(void) :
   // [init action servers]
   
   // [init action clients]
-
-  this->action.add_whole_body();
 }
 
 ActionClientAlgNode::~ActionClientAlgNode(void)