deleted file mode 100644
--- a/library/log4php/LoggerMDC.php
+++ /dev/null
@@ -1,88 +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
- */
-
-/**
- * The LoggerMDC class provides _mapped diagnostic contexts_.
- *
- * A Mapped Diagnostic Context, or MDC in short, is an instrument for
- * distinguishing interleaved log output from different sources. Log output
- * is typically interleaved when a server handles multiple clients
- * near-simultaneously.
- *
- * This class is similar to the {@link LoggerNDC} class except that
- * it is based on a map instead of a stack.
- *
- * @version $Revision: 1343630 $
- * @since 0.3
- * @package log4php
- */
-class LoggerMDC {
-
-    /** Holds the context map. */
-    private static $map = array();
-
-    /**
-     * Stores a context value as identified with the key parameter into the
-     * context map.
-     *
-     * @param string $key the key
-     * @param string $value the value
-     */
-    public static function put($key, $value) {
-        self::$map[$key] = $value;
-    }
-
-    /**
-     * Returns the context value identified by the key parameter.
-     *
-     * @param string $key The key.
-     * @return string The context or an empty string if no context found
-     *    for given key.
-     */
-    public static function get($key) {
-        return isset(self::$map[$key]) ? self::$map[$key] : '';
-    }
-
-    /**
-     * Returns the contex map as an array.
-     * @return array The MDC context map.
-     */
-    public static function getMap() {
-        return self::$map;
-    }
-
-    /**
-     * Removes the the context identified by the key parameter.
-     *
-     * Only affects user mappings, not $_ENV or $_SERVER.
-     *
-     * @param string $key The key to be removed.
-     */
-    public static function remove($key) {
-        unset(self::$map[$key]);
-    }
-
-    /**
-     * Clears the mapped diagnostic context.
-     */
-    public static function clear() {
-        self::$map = array();
-    }
-}