remove opencv source-compilation information

Author: marvin2k

06osdeps_from_source.autobuild

@@ -83,10 +83,6 @@ version_control:
       type: archive
       url: https://github.com/SINTEF-Geometry/SISL/archive/SISL-4.6.0.tar.gz
       update_cached_file: false
-    - external/opencv:
-      type: archive
-      url: http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.9/opencv-2.4.9.zip
-      update_cached_file: false
 
 overrides:
     - ^(orogen|typelib|rtt|utilrb|utilmm|rtt_typelib|tools/metaruby)$: