style: Remove unused image_paths private variable
style: Remove unused image_paths private variable

This variable is unused, so remove it.

pwithnall/mx,pwithnall/mx,clutter-project/mx,pwithnall/mx,pwithnall/mx,jonnylamb/mx,clutter-project/mx,clutter-project/mx,jonnylamb/mx,clutter-project/mx,jonnylamb/mx,jonnylamb/mx