Docs: Clarify the file header summary for wp-includes/http-functions.php, introduced in [33748].

Also removes now-moot extra information from the file header description.

See #33413. See #33701.


git-svn-id: https://develop.svn.wordpress.org/trunk@33879 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/http-functions.php

@@ -1,14 +1,10 @@
 <?php
 /**
- * Simple and uniform HTTP request API.
- *
- * Will eventually replace and standardize the WordPress HTTP requests made.
- *
- * @link https://core.trac.wordpress.org/ticket/4779 HTTP API Proposal
+ * HTTP API: Top-level HTTP request API functionality
  *
  * @package WordPress
  * @subpackage HTTP
- * @since 2.7.0
+ * @since 4.4.0
  */
 
 /**