diff --git a/library/smarty/libs/sysplugins/smarty_cacheresource_custom.php b/library/smarty/libs/sysplugins/smarty_cacheresource_custom.php
deleted file mode 100644
--- a/library/smarty/libs/sysplugins/smarty_cacheresource_custom.php
+++ /dev/null
@@ -1,300 +0,0 @@
-<?php
-/**
- * Smarty Internal Plugin
- *
- * @package    Smarty
- * @subpackage Cacher
- */
-
-/**
- * Cache Handler API
- *
- * @package    Smarty
- * @subpackage Cacher
- * @author     Rodney Rehm
- */
-abstract class Smarty_CacheResource_Custom extends Smarty_CacheResource {
-    /**
-     * fetch cached content and its modification time from data source
-     *
-     * @param  string $id unique cache content identifier
-     * @param  string $name template name
-     * @param  string $cache_id cache id
-     * @param  string $compile_id compile id
-     * @param  string $content cached content
-     * @param  integer $mtime cache modification timestamp (epoch)
-     *
-     * @return void
-     */
-    abstract protected function fetch($id, $name, $cache_id, $compile_id, &$content, &$mtime);
-
-    /**
-     * Fetch cached content's modification timestamp from data source
-     * {@internal implementing this method is optional.
-     *  Only implement it if modification times can be accessed faster than loading the complete cached content.}}
-     *
-     * @param  string $id unique cache content identifier
-     * @param  string $name template name
-     * @param  string $cache_id cache id
-     * @param  string $compile_id compile id
-     *
-     * @return integer|boolean timestamp (epoch) the template was modified, or false if not found
-     */
-    protected function fetchTimestamp($id, $name, $cache_id, $compile_id) {
-        return null;
-    }
-
-    /**
-     * Save content to cache
-     *
-     * @param  string $id unique cache content identifier
-     * @param  string $name template name
-     * @param  string $cache_id cache id
-     * @param  string $compile_id compile id
-     * @param  integer|null $exp_time seconds till expiration or null
-     * @param  string $content content to cache
-     *
-     * @return boolean      success
-     */
-    abstract protected function save($id, $name, $cache_id, $compile_id, $exp_time, $content);
-
-    /**
-     * Delete content from cache
-     *
-     * @param  string $name template name
-     * @param  string $cache_id cache id
-     * @param  string $compile_id compile id
-     * @param  integer|null $exp_time seconds till expiration time in seconds or null
-     *
-     * @return integer      number of deleted caches
-     */
-    abstract protected function delete($name, $cache_id, $compile_id, $exp_time);
-
-    /**
-     * populate Cached Object with meta data from Resource
-     *
-     * @param  Smarty_Template_Cached $cached cached object
-     * @param  Smarty_Internal_Template $_template template object
-     *
-     * @return void
-     */
-    public function populate(Smarty_Template_Cached $cached, Smarty_Internal_Template $_template) {
-        $_cache_id = isset($cached->cache_id) ? preg_replace('![^\w\|]+!', '_', $cached->cache_id) : null;
-        $_compile_id = isset($cached->compile_id) ? preg_replace('![^\w\|]+!', '_', $cached->compile_id) : null;
-        $path = $cached->source->filepath . $_cache_id . $_compile_id;
-        $cached->filepath = sha1($path);
-        if ($_template->smarty->cache_locking) {
-            $cached->lock_id = sha1('lock.' . $path);
-        }
-        $this->populateTimestamp($cached);
-    }
-
-    /**
-     * populate Cached Object with timestamp and exists from Resource
-     *
-     * @param Smarty_Template_Cached $cached
-     *
-     * @return void
-     */
-    public function populateTimestamp(Smarty_Template_Cached $cached) {
-        $mtime = $this->fetchTimestamp($cached->filepath, $cached->source->name, $cached->cache_id, $cached->compile_id);
-        if ($mtime !== null) {
-            $cached->timestamp = $mtime;
-            $cached->exists = !!$cached->timestamp;
-
-            return;
-        }
-        $timestamp = null;
-        $this->fetch($cached->filepath, $cached->source->name, $cached->cache_id, $cached->compile_id, $cached->content, $timestamp);
-        $cached->timestamp = isset($timestamp) ? $timestamp : false;
-        $cached->exists = !!$cached->timestamp;
-    }
-
-    /**
-     * Read the cached template and process the header
-     *
-     * @param  Smarty_Internal_Template $_template template object
-     * @param  Smarty_Template_Cached $cached cached object
-     *
-     * @return boolean                 true or false if the cached content does not exist
-     */
-    public function process(Smarty_Internal_Template $_template, Smarty_Template_Cached $cached = null) {
-        if (!$cached) {
-            $cached = $_template->cached;
-        }
-        $content = $cached->content ? $cached->content : null;
-        $timestamp = $cached->timestamp ? $cached->timestamp : null;
-        if ($content === null || !$timestamp) {
-            $this->fetch(
-                $_template->cached->filepath,
-                $_template->source->name,
-                $_template->cache_id,
-                $_template->compile_id,
-                $content,
-                $timestamp
-            );
-        }
-        if (isset($content)) {
-            /** @var Smarty_Internal_Template $_smarty_tpl
-             * used in evaluated code
-             */
-            $_smarty_tpl = $_template;
-            eval("?>" . $content);
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * Write the rendered template output to cache
-     *
-     * @param  Smarty_Internal_Template $_template template object
-     * @param  string $content content to cache
-     *
-     * @return boolean                  success
-     */
-    public function writeCachedContent(Smarty_Internal_Template $_template, $content) {
-        return $this->save(
-            $_template->cached->filepath,
-            $_template->source->name,
-            $_template->cache_id,
-            $_template->compile_id,
-            $_template->properties['cache_lifetime'],
-            $content
-        );
-    }
-
-    /**
-     * Read cached template from cache
-     *
-     * @param  Smarty_Internal_Template $_template template object
-     *
-     * @return string  content
-     */
-    public function readCachedContent(Smarty_Internal_Template $_template) {
-        $content = $_template->cached->content ? $_template->cached->content : null;
-        $timestamp = null;
-        if ($content === null) {
-            $timestamp = null;
-            $this->fetch(
-                $_template->cached->filepath,
-                $_template->source->name,
-                $_template->cache_id,
-                $_template->compile_id,
-                $content,
-                $timestamp
-            );
-        }
-        if (isset($content)) {
-            return $content;
-        }
-        return false;
-    }
-
-    /**
-     * Empty cache
-     *
-     * @param  Smarty $smarty Smarty object
-     * @param  integer $exp_time expiration time (number of seconds, not timestamp)
-     *
-     * @return integer number of cache files deleted
-     */
-    public function clearAll(Smarty $smarty, $exp_time = null) {
-        $this->cache = array();
-
-        return $this->delete(null, null, null, $exp_time);
-    }
-
-    /**
-     * Empty cache for a specific template
-     *
-     * @param  Smarty $smarty Smarty object
-     * @param  string $resource_name template name
-     * @param  string $cache_id cache id
-     * @param  string $compile_id compile id
-     * @param  integer $exp_time expiration time (number of seconds, not timestamp)
-     *
-     * @return integer number of cache files deleted
-     */
-    public function clear(Smarty $smarty, $resource_name, $cache_id, $compile_id, $exp_time) {
-        $this->cache = array();
-        $cache_name = null;
-
-        if (isset($resource_name)) {
-            $_save_stat = $smarty->caching;
-            $smarty->caching = true;
-            $tpl = new $smarty->template_class($resource_name, $smarty);
-            $smarty->caching = $_save_stat;
-
-            if ($tpl->source->exists) {
-                $cache_name = $tpl->source->name;
-            } else {
-                return 0;
-            }
-            // remove from template cache
-            if ($smarty->allow_ambiguous_resources) {
-                $_templateId = $tpl->source->unique_resource . $tpl->cache_id . $tpl->compile_id;
-            } else {
-                $_templateId = $smarty->joined_template_dir . '#' . $resource_name . $tpl->cache_id . $tpl->compile_id;
-            }
-            if (isset($_templateId[150])) {
-                $_templateId = sha1($_templateId);
-            }
-            unset($smarty->template_objects[$_templateId]);
-            // template object no longer needed
-            unset($tpl);
-        }
-
-        return $this->delete($cache_name, $cache_id, $compile_id, $exp_time);
-    }
-
-    /**
-     * Check is cache is locked for this template
-     *
-     * @param  Smarty $smarty Smarty object
-     * @param  Smarty_Template_Cached $cached cached object
-     *
-     * @return boolean               true or false if cache is locked
-     */
-    public function hasLock(Smarty $smarty, Smarty_Template_Cached $cached) {
-        $id = $cached->lock_id;
-        $name = $cached->source->name . '.lock';
-
-        $mtime = $this->fetchTimestamp($id, $name, $cached->cache_id, $cached->compile_id);
-        if ($mtime === null) {
-            $this->fetch($id, $name, $cached->cache_id, $cached->compile_id, $content, $mtime);
-        }
-        return $mtime && ($t = time()) - $mtime < $smarty->locking_timeout;
-    }
-
-    /**
-     * Lock cache for this template
-     *
-     * @param Smarty $smarty Smarty object
-     * @param Smarty_Template_Cached $cached cached object
-     *
-     * @return bool|void
-     */
-    public function acquireLock(Smarty $smarty, Smarty_Template_Cached $cached) {
-        $cached->is_locked = true;
-        $id = $cached->lock_id;
-        $name = $cached->source->name . '.lock';
-        $this->save($id, $name, $cached->cache_id, $cached->compile_id, $smarty->locking_timeout, '');
-    }
-
-    /**
-     * Unlock cache for this template
-     *
-     * @param Smarty $smarty Smarty object
-     * @param Smarty_Template_Cached $cached cached object
-     *
-     * @return bool|void
-     */
-    public function releaseLock(Smarty $smarty, Smarty_Template_Cached $cached) {
-        $cached->is_locked = false;
-        $name = $cached->source->name . '.lock';
-        $this->delete($name, $cached->cache_id, $cached->compile_id, null);
-    }
-}