Scripts temporarily deregister themselves while executing. This

allows us to avoid execution loops without having to hack around the
image registration order.

src/core/image.c

@@ -106,20 +106,6 @@ void unregister_image ( struct image *image ) {
 	DBGC ( image, "IMAGE %p unregistered\n", image );
 }
 
-/**
- * Move image to start of list of registered images
- *
- * @v image		Executable/loadable image
- *
- * Move the image to the start of the image list.  This makes it
- * easier to keep track of which of the images marked as loaded is
- * likely to still be valid.
- */
-void promote_image ( struct image *image ) {
-	list_del ( &image->list );
-	list_add ( &image->list, &images );
-}
-
 /**
  * Find image by name
  *