diff --git a/library/log4php/xml/log4php.dtd b/library/log4php/xml/log4php.dtd
deleted file mode 100644
--- a/library/log4php/xml/log4php.dtd
+++ /dev/null
@@ -1,148 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-        <!--
-         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.
-         -->
-        <!-- Authors: Chris Taylor, Ceki Gülcü. -->
-        <!-- Version: 1.2 -->
-
-        <!-- PHP Port Modifications Author: Marco Vassura -->
-        <!-- PHP dtd Version: $Revision: 823875 $ -->
-
-        <!-- A configuration element consists of optional renderer
-        elements,appender elements, categories and an optional root
-        element. -->
-        <!-- [log4php] -->
-        <!--
-            category instead of logger cannot be used. categoryFactory is not implemented in log4php.
-        -->
-        <!-- [/log4php] -->
-        <!ELEMENT log4php:configuration (renderer*, appender*,(logger)*,root?)>
-
-        <!-- The "threshold" attribute takes a level value such that all -->
-        <!-- logging statements with a level equal or below this value are -->
-        <!-- disabled. -->
-
-        <!-- Setting the "debug" enable the printing of internal log4j logging   -->
-        <!-- statements.                                                         -->
-
-        <!-- By default, debug attribute is "null", meaning that we not do touch -->
-        <!-- internal log4j logging settings. The "null" value for the threshold -->
-        <!-- attribute can be misleading. The threshold field of a repository    -->
-        <!-- cannot be set to null. The "null" value for the threshold attribute -->
-        <!-- simply means don't touch the threshold field, the threshold field   -->
-        <!-- keeps its old value.                                                -->
-
-        <!ATTLIST log4php:configuration
-                xmlns:log4php            CDATA #FIXED "http://logging.apache.org/log4php"
-                threshold                (all|debug|info|warn|error|fatal|off|null) "null"
-                >
-
-        <!-- renderer elements allow the user to customize the conversion of  -->
-        <!-- message objects to String.                                       -->
-        <!ELEMENT renderer EMPTY>
-        <!ATTLIST renderer
-                renderedClass  CDATA #REQUIRED
-                renderingClass CDATA #REQUIRED
-                >
-
-        <!-- Appenders must have a name and a class. -->
-        <!-- Appenders may contain an error handler, a layout, optional parameters -->
-        <!-- and filters. They may also reference (or include) other appenders. -->
-        <!-- [log4php] -->
-        <!-- error handler tag has no effects since log4php does not handle errors. Defintion deleted. -->
-        <!-- [/log4php] -->
-        <!ELEMENT appender (param*, layout?, filter*, appender-ref*)>
-        <!ATTLIST appender
-                name      ID  #REQUIRED
-                class     CDATA   #REQUIRED
-                >
-
-        <!ELEMENT layout (param*)>
-        <!ATTLIST layout
-                class     CDATA   #REQUIRED
-                >
-
-        <!ELEMENT filter (param*)>
-        <!ATTLIST filter
-                class     CDATA   #REQUIRED
-                >
-
-
-        <!ELEMENT param EMPTY>
-        <!ATTLIST param
-                name      CDATA   #REQUIRED
-                value     CDATA   #REQUIRED
-                >
-
-        <!ELEMENT priority EMPTY>
-        <!ATTLIST priority
-                value   CDATA #REQUIRED
-                >
-
-        <!ELEMENT level EMPTY>
-        <!ATTLIST level
-                value   CDATA #REQUIRED
-                >
-
-        <!-- If no level element is specified, then the configurator MUST not -->
-        <!-- touch the level of the named logger. -->
-        <!ELEMENT logger (level?,appender-ref*)>
-        <!ATTLIST logger
-                name      ID  #REQUIRED
-                additivity    (true|false) "true"
-                >
-
-        <!ELEMENT appender-ref EMPTY>
-        <!ATTLIST appender-ref
-                ref IDREF #REQUIRED
-                >
-
-        <!-- If no priority element is specified, then the configurator MUST not -->
-        <!-- touch the priority of root. -->
-        <!-- The root category always exists and cannot be subclassed. -->
-        <!ELEMENT root (param*, (priority|level)?, appender-ref*)>
-
-
-        <!-- ==================================================================== -->
-        <!--                       A logging event                                -->
-        <!-- ==================================================================== -->
-        <!ELEMENT log4php:eventSet (log4php:event*)>
-        <!ATTLIST log4php:eventSet
-                xmlns:log4php          CDATA #FIXED "http://www.vxr.it/log4php/"
-                version                (0.2|0.3) "0.3"
-                includesLocationInfo   (true|false) "true"
-                >
-
-        <!ELEMENT log4php:event (log4php:message, log4php:locationInfo?) >
-
-        <!-- The timestamp format is application dependent. -->
-        <!ATTLIST log4php:event
-                logger     CDATA #REQUIRED
-                level      CDATA #REQUIRED
-                thread     CDATA #REQUIRED
-                timestamp  CDATA #REQUIRED
-                >
-
-        <!ELEMENT log4php:message (#PCDATA)>
-        <!ELEMENT log4php:NDC (#PCDATA)>
-
-        <!ELEMENT log4php:locationInfo EMPTY>
-        <!ATTLIST log4php:locationInfo
-                class  CDATA  #REQUIRED
-                method CDATA  #REQUIRED
-                file   CDATA  #REQUIRED
-                line   CDATA  #REQUIRED
-                >