remove gtk-doc warning on multiple inclusion of SECTION:clutter-gst-version
remove gtk-doc warning on multiple inclusion of SECTION:clutter-gst-version

lubosz/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,GNOME/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst