[PATCH] remove EXPORT_SYMBOL for root_dev

Remove ROOT_DEV after unexporting it in the previous patch, as requested time
ago by Christoph Hellwig.
Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

init/do_mounts.c

@@ -26,8 +26,6 @@ static char __initdata saved_root_name[64];
 /* this is initialized in init/main.c */
 dev_t ROOT_DEV;
 
-EXPORT_SYMBOL(ROOT_DEV);
-
 static int __init load_ramdisk(char *str)
 {
 	rd_doload = simple_strtol(str,NULL,0) & 3;