diff --git a/library/smarty/libs/plugins/modifier.regex_replace.php b/library/smarty/libs/plugins/modifier.regex_replace.php
deleted file mode 100644
--- a/library/smarty/libs/plugins/modifier.regex_replace.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-/**
- * Smarty plugin
- *
- * @package    Smarty
- * @subpackage PluginsModifier
- */
-
-/**
- * Smarty regex_replace modifier plugin
- * Type:     modifier<br>
- * Name:     regex_replace<br>
- * Purpose:  regular expression search/replace
- *
- * @link    http://smarty.php.net/manual/en/language.modifier.regex.replace.php
- *          regex_replace (Smarty online manual)
- * @author  Monte Ohrt <monte at ohrt dot com>
- *
- * @param string $string input string
- * @param string|array $search regular expression(s) to search for
- * @param string|array $replace string(s) that should be replaced
- *
- * @return string
- */
-function smarty_modifier_regex_replace($string, $search, $replace) {
-    if (is_array($search)) {
-        foreach ($search as $idx => $s) {
-            $search[$idx] = _smarty_regex_replace_check($s);
-        }
-    } else {
-        $search = _smarty_regex_replace_check($search);
-    }
-
-    return preg_replace($search, $replace, $string);
-}
-
-/**
- * @param  string $search string(s) that should be replaced
- *
- * @return string
- * @ignore
- */
-function _smarty_regex_replace_check($search) {
-    // null-byte injection detection
-    // anything behind the first null-byte is ignored
-    if (($pos = strpos($search, "\0")) !== false) {
-        $search = substr($search, 0, $pos);
-    }
-    // remove eval-modifier from $search
-    if (preg_match('!([a-zA-Z\s]+)$!s', $search, $match) && (strpos($match[1], 'e') !== false)) {
-        $search = substr($search, 0, -strlen($match[1])) . preg_replace('![e\s]+!', '', $match[1]);
-    }
-
-    return $search;
-}