block: remove blk_part_pack_uuid

This helper was only used by IMA of all things, which would get spurious
errors if CONFIG_BLOCK is disabled.  Just opencode the call there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

security/integrity/ima/ima_policy.c

@@ -717,8 +717,7 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry)
 				break;
 			}
 
-			result = blk_part_pack_uuid(args[0].from,
-						    entry->fsuuid);
+			result = uuid_parse(args[0].from, (uuid_t *)&entry->fsuuid);
 			if (!result)
 				entry->flags |= IMA_FSUUID;
 			break;