diff --git a/library/smarty/libs/sysplugins/smarty_internal_parsetree.php b/library/smarty/libs/sysplugins/smarty_internal_parsetree.php
deleted file mode 100644
--- a/library/smarty/libs/sysplugins/smarty_internal_parsetree.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-/**
- * Smarty Internal Plugin Templateparser Parsetrees
- * These are classes to build parsetrees in the template parser
- *
- * @package    Smarty
- * @subpackage Compiler
- * @author     Thue Kristensen
- * @author     Uwe Tews
- */
-
-/**
- * @package    Smarty
- * @subpackage Compiler
- * @ignore
- */
-abstract class Smarty_Internal_ParseTree {
-
-    /**
-     * Parser object
-     *
-     * @var object
-     */
-    public $parser;
-
-    /**
-     * Buffer content
-     *
-     * @var mixed
-     */
-    public $data;
-
-    /**
-     * Subtree array
-     *
-     * @var array
-     */
-    public $subtrees = array();
-
-    /**
-     * Return buffer
-     *
-     * @return string buffer content
-     */
-    abstract public function to_smarty_php();
-}
-
-