Update package dependencies

package.xml

@@ -33,9 +33,6 @@
   <!-- Examples: -->
   <!-- Use depend as a shortcut for packages that are both build and exec dependencies -->
   <!--   <depend>roscpp</depend> -->
-  <depend>gazebo_ros</depend>
-  <depend>joint_state_publisher</depend>
-  <depend>robot_state_publisher</depend>
   <!--   Note that this is equivalent to the following: -->
   <!--   <build_depend>roscpp</build_depend> -->
   <!--   <exec_depend>roscpp</exec_depend> -->
@@ -52,6 +49,8 @@
   <!-- Use doc_depend for packages you need only for building documentation: -->
   <!--   <doc_depend>doxygen</doc_depend> -->
   <buildtool_depend>catkin</buildtool_depend>
+  <exec_depend>iri_gazebo_worlds</exec_depend>
+  <exec_depend>gazebo_ros</exec_depend>
 
 
   <!-- The export tag contains other, unspecified, tags -->