Remove inorder option as its the default

launch/description.launch

@@ -9,7 +9,7 @@
   <group ns="$(arg ns)">
     
     <param name="robot_description"
-         command="$(find xacro)/xacro --inorder '$(find iri_ana_description)/urdf/$(arg model).xacro' name:=$(arg ns)" />
+         command="$(find xacro)/xacro '$(find iri_ana_description)/urdf/$(arg model).xacro' name:=$(arg ns)" />
 
     <node if="$(arg state_pub)"
           pkg="robot_state_publisher"