Docs: Remove @access notations from method DocBlocks in wp-includes/* classes.

Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs.

See #41452.

Built from https://develop.svn.wordpress.org/trunk@41162


git-svn-id: http://core.svn.wordpress.org/trunk@41002 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-error.php

@@ -65,7 +65,6 @@ class WP_Error {
 	 * Retrieve all error codes.
 	 *
 	 * @since 2.1.0
-	 * @access public
 	 *
 	 * @return array List of error codes, if available.
 	 */
@@ -80,7 +79,6 @@ class WP_Error {
 	 * Retrieve first error code available.
 	 *
 	 * @since 2.1.0
-	 * @access public
 	 *
 	 * @return string|int Empty string, if no error codes.
 	 */
@@ -157,7 +155,6 @@ class WP_Error {
 	 * Add an error or append additional message to an existing error.
 	 *
 	 * @since 2.1.0
-	 * @access public
 	 *
 	 * @param string|int $code Error code.
 	 * @param string $message Error message.