llist: fix a comment after cbae73e1dd9

Pointed-it-by: Kevin Ji
URL: https://github.com/curl/curl/commit/cbae73e1dd95946597ea74ccb580c30f78e3fa73#commitcomment-21872622
diff --git a/lib/llist.c b/lib/llist.c
index 15cac82..06cebb9 100644
--- a/lib/llist.c
+++ b/lib/llist.c
@@ -51,8 +51,6 @@
  *
  * The 'ne' argument should be a pointer into the object to store.
  *
- * Returns: 1 on success and 0 on failure.
- *
  * @unittest: 1300
  */
 void