Docs: Remove incorrect @return tags.

Props diddledan.
Fixes #48613, #48614.

git-svn-id: https://develop.svn.wordpress.org/trunk@46732 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/post.php

@@ -1632,7 +1632,6 @@ function wp_set_post_lock( $post_id ) {
  * Outputs the HTML for the notice to say that someone else is editing or has taken over editing of this post.
  *
  * @since 2.8.5
- * @return none
  */
 function _admin_notice_post_locked() {
 	$post = get_post();

src/wp-includes/feed.php

@@ -250,7 +250,6 @@ function the_permalink_rss() {
  * Outputs the link to the comments for the current post in an xml safe way
  *
  * @since 3.0.0
- * @return none
  */
 function comments_link_feed() {
 	/**