Remove unused code

- Remove commented code
- Remove unused/immediately overwritten variables
- Remove extraneous parameters
- Remove unreachable code
- Remove duplicate array keys

src/Util/XML.php

@@ -287,9 +287,6 @@ class XML
 
 		//Initializations
 		$xml_array = [];
-		$parents = [];
-		$opened_tags = [];
-		$arr = [];
 
 		$current = &$xml_array; // Reference