trim now unused dependencies.

Author: stonier

package.xml

@@ -13,15 +13,9 @@
 
   <buildtool_depend>catkin</buildtool_depend>
 
-  <build_depend>python-rospkg</build_depend>
-  <build_depend>rospy</build_depend>
   <build_depend>java</build_depend>
   <build_depend>ant</build_depend>
-  <build_depend>python-rosinstall-generator</build_depend>
-  <run_depend>python-rospkg</run_depend>
-  <run_depend>rospy</run_depend>
   <run_depend>java</run_depend>
   <run_depend>ant</run_depend>
   <run_depend>catkin</run_depend>
-  <run_depend>python-rosinstall-generator</run_depend>
 </package>