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/class-wp-customize-widgets.php

@@ -173,8 +173,6 @@ final class WP_Customize_Widgets {
 	 *
 	 * @since 4.2.0
 	 *
-	 * @staticvar array $cache
-	 *
 	 * @param string $setting_id Setting ID.
 	 * @return string|void Setting type.
 	 */
@@ -936,7 +934,6 @@ final class WP_Customize_Widgets {
 	 *
 	 * @global array $wp_registered_widgets
 	 * @global array $wp_registered_widget_controls
-	 * @staticvar array $available_widgets
 	 *
 	 * @see wp_list_widgets()
 	 *