diff --git a/library/log4php/pattern/LoggerPatternConverterSessionID.php b/library/log4php/pattern/LoggerPatternConverterSessionID.php
deleted file mode 100644
--- a/library/log4php/pattern/LoggerPatternConverterSessionID.php
+++ /dev/null
@@ -1,33 +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 active session ID, or an empty string if out of session.
- *
- * @package log4php
- * @subpackage pattern
- * @version $Revision: 1326626 $
- * @since 2.3
- */
-class LoggerPatternConverterSessionID extends LoggerPatternConverter {
-    public function convert(LoggerLoggingEvent $event) {
-        return session_id();
-    }
-}