diff --git a/library/log4php/pattern/LoggerPatternConverterMDC.php b/library/log4php/pattern/LoggerPatternConverterMDC.php
deleted file mode 100644
--- a/library/log4php/pattern/LoggerPatternConverterMDC.php
+++ /dev/null
@@ -1,55 +0,0 @@
-<?php
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- *       http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @package log4php
- */
-
-/**
- * Returns the Mapped Diagnostic Context value corresponding to the given key.
- *
- * Options:
- *  [0] the MDC key
- *
- * @package log4php
- * @subpackage pattern
- * @version $Revision: 1326626 $
- * @since 2.3
- */
-class LoggerPatternConverterMDC extends LoggerPatternConverter {
-
-    private $key;
-
-    public function activateOptions() {
-        if (isset($this->option) && $this->option !== '') {
-            $this->key = $this->option;
-        }
-    }
-
-    public function convert(LoggerLoggingEvent $event) {
-        if (isset($this->key)) {
-            return $event->getMDC($this->key);
-        } else {
-            $buff = array();
-            $map = $event->getMDCMap();
-            foreach ($map as $key => $value) {
-                $buff [] = "$key=$value";
-            }
-            return implode(', ', $buff);
-        }
-    }
-}
- 
\ No newline at end of file