diff --git a/library/smarty/demo/plugins/resource.mysqls.php b/library/smarty/demo/plugins/resource.mysqls.php
deleted file mode 100644
--- a/library/smarty/demo/plugins/resource.mysqls.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-
-/**
- * MySQL Resource
- * Resource Implementation based on the Custom API to use
- * MySQL as the storage resource for Smarty's templates and configs.
- * Note that this MySQL implementation fetches the source and timestamps in
- * a single database query, instead of two separate like resource.mysql.php does.
- * Table definition:
- * <pre>CREATE TABLE IF NOT EXISTS `templates` (
- *   `name` varchar(100) NOT NULL,
- *   `modified` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
- *   `source` text,
- *   PRIMARY KEY (`name`)
- * ) ENGINE=InnoDB DEFAULT CHARSET=utf8;</pre>
- * Demo data:
- * <pre>INSERT INTO `templates` (`name`, `modified`, `source`) VALUES ('test.tpl', "2010-12-25 22:00:00", '{$x="hello world"}{$x}');</pre>
- *
- * @package Resource-examples
- * @author  Rodney Rehm
- */
-class Smarty_Resource_Mysqls extends Smarty_Resource_Custom {
-    // PDO instance
-    protected $db;
-    // prepared fetch() statement
-    protected $fetch;
-
-    public function __construct() {
-        try {
-            $this->db = new PDO("mysql:dbname=test;host=127.0.0.1", "smarty");
-        } catch (PDOException $e) {
-            throw new SmartyException('Mysql Resource failed: ' . $e->getMessage());
-        }
-        $this->fetch = $this->db->prepare('SELECT modified, source FROM templates WHERE name = :name');
-    }
-
-    /**
-     * Fetch a template and its modification time from database
-     *
-     * @param  string $name template name
-     * @param  string $source template source
-     * @param  integer $mtime template modification timestamp (epoch)
-     *
-     * @return void
-     */
-    protected function fetch($name, &$source, &$mtime) {
-        $this->fetch->execute(array('name' => $name));
-        $row = $this->fetch->fetch();
-        $this->fetch->closeCursor();
-        if ($row) {
-            $source = $row['source'];
-            $mtime = strtotime($row['modified']);
-        } else {
-            $source = null;
-            $mtime = null;
-        }
-    }
-}