fix dependency version

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1565991 13f79535-47bb-0310-9956-ffa450edef68

archiva-modules/archiva-web/archiva-webapp/pom.xml

@@ -270,7 +270,6 @@
     <dependency>
       <groupId>xerces</groupId>
       <artifactId>xercesImpl</artifactId>
-      <version>2.9.1</version>
     </dependency>
     <dependency>
       <groupId>org.apache.ant</groupId>
@@ -574,11 +573,6 @@
       </exclusions>
     </dependency>
 
-    <dependency>
-      <groupId>xerces</groupId>
-      <artifactId>xercesImpl</artifactId>
-    </dependency>
-
     <dependency>
       <groupId>org.apache.archiva</groupId>
       <artifactId>archiva-webdav</artifactId>