diff --git a/src/Filter/FilterPluginManager.php b/src/Filter/FilterPluginManager.php
deleted file mode 100644
index 80b24c32..00000000
--- a/src/Filter/FilterPluginManager.php
+++ /dev/null
@@ -1,77 +0,0 @@
-<?php
-/**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category   Zend
- * @package    Zend_Filter
- * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- */
-
-namespace Zend\I18n\Filter;
-
-use Zend\ServiceManager\AbstractPluginManager;
-use Zend\Filter\FilterInterface;
-use Zend\I18n\Exception;
-
-/**
- * Plugin manager implementation for the filter chain.
- *
- * Enforces that filters retrieved are either callbacks or instances of
- * FilterInterface. Additionally, it registers a number of default filters
- * available, as well as aliases for them.
- *
- * @category   Zend
- * @package    Zend_Filter
- * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license    http://framework.zend.com/license/new-bsd     New BSD License
- */
-class FilterPluginManager extends AbstractPluginManager
-{
-    /**
-     * Default set of filters
-     * 
-     * @var array
-     */
-    protected $invokableClasses = array(
-        'numberformat' => 'Zend\I18n\Filter\NumberFormat',
-    );
-
-    /**
-     * Validate the plugin
-     *
-     * Checks that the filter loaded is either a valid callback or an instance
-     * of FilterInterface.
-     * 
-     * @param  mixed $plugin 
-     * @return void
-     * @throws Exception\RuntimeException if invalid
-     */
-    public function validatePlugin($plugin)
-    {
-        if ($plugin instanceof FilterInterface) {
-            // we're okay
-            return;
-        }
-        if (is_callable($plugin)) {
-            // also okay
-            return;
-        }
-
-        throw new Exception\RuntimeException(sprintf(
-            'Plugin of type %s is invalid; must implement %s\FilterInterface or be callable',
-            (is_object($plugin) ? get_class($plugin) : gettype($plugin)),
-            __NAMESPACE__
-        ));
-    }
-}