kill reiserfs_bdevname()

it's never called with NULL argument...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index a958444..02b0b7d 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -419,7 +419,7 @@
 	char *s;
 
 	/* Some block devices use /'s */
-	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
+	strlcpy(b, sb->s_id, BDEVNAME_SIZE);
 	s = strchr(b, '/');
 	if (s)
 		*s = '!';
@@ -449,7 +449,7 @@
 		char *s;
 
 		/* Some block devices use /'s */
-		strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
+		strlcpy(b, sb->s_id, BDEVNAME_SIZE);
 		s = strchr(b, '/');
 		if (s)
 			*s = '!';