pstore: remove unneeded unlikely()

IS_ERR() macro it is already including unlikely().
Signed-off-by: Hirofumi Nakagawa <nklabs@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/pstore/platform.c

@@ -654,7 +654,7 @@ static int pstore_write_user_compat(struct pstore_record *record,
 		return -EINVAL;
 
 	record->buf = memdup_user(buf, record->size);
-	if (unlikely(IS_ERR(record->buf))) {
+	if (IS_ERR(record->buf)) {
 		ret = PTR_ERR(record->buf);
 		goto out;
 	}