if dir is empty after all removals, remove the dir itself, too.

imagemagick/imagemagick.spec

@@ -143,6 +143,7 @@ AutoReqProv:  no
       rm -f share/ImageMagick/*.txt
       rm -f share/ImageMagick/*.html
       rm -rf share/ImageMagick/images
+      rmdir share/ImageMagick >/dev/null 2>&1 || true
       rm -f lib/libMagick.la
     )