Docs: Remove @staticvar tags from core.

The tag was supported in phpDocumentor 1.x, but is no longer supported in 2.x and 3.x.

Usage of static variables is considered an internal implementation detail and has no information value for someone reading the docs.

Props alishanvr, jrf.
Fixes #50426.
Built from https://develop.svn.wordpress.org/trunk@48109


git-svn-id: http://core.svn.wordpress.org/trunk@47878 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/theme.php

@@ -15,7 +15,6 @@
  * @since 3.4.0
  *
  * @global array $wp_theme_directories
- * @staticvar array $_themes
  *
  * @param array $args {
  *     Optional. The search arguments.
@@ -424,7 +423,6 @@ function register_theme_directory( $directory ) {
  * @since 2.9.0
  *
  * @global array $wp_theme_directories
- * @staticvar array $found_themes
  *
  * @param bool $force Optional. Whether to force a new directory scan. Defaults to false.
  * @return array|false Valid themes found
@@ -1254,7 +1252,6 @@ function the_header_image_tag( $attr = array() ) {
  * @access private
  *
  * @global array  $_wp_default_headers
- * @staticvar object $_wp_random_header
  *
  * @return object
  */