remove gconf settings for gnome desktop

debian/fuss-artwork.gconf-defaults

-/apps/gnome-session/options/splash_image splash/fuss-splash.png
-/desktop/gnome/interface/gtk_theme      Industrial
-/desktop/gnome/interface/icon_theme     Tango
-/desktop/gnome/peripherals/mouse/cursor_theme   Tango
-/apps/metacity/general/theme	Clearlooks

debian/rules

 #!/usr/bin/make -f
-override_dh_gconf:
-	dh_gconf --priority=20
-
 %:
-	dh $@
\ No newline at end of file
+	dh $@