Deprecate update_category_cache(). Fixes #15446

git-svn-id: http://svn.automattic.com/wordpress/trunk@16412 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/deprecated.php

@@ -2556,3 +2556,22 @@ function is_plugin_page() {
 
 	return false;
 }
+
+/**
+ * Update the categories cache.
+ *
+ * This function does not appear to be used anymore or does not appear to be
+ * needed. It might be a legacy function left over from when there was a need
+ * for updating the category cache.
+ *
+ * @since 1.5.0
+ * @deprecated 3.1
+ *
+ * @return bool Always return True
+ */
+function update_category_cache() {
+	_deprecated_function( __FUNCTION__, '3.1'  );
+
+	return true;
+}
+