Remove obsolete dependency to xml-api

diff --git a/pom.xml b/pom.xml
index 528f919..3aea09f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -152,11 +152,6 @@
       <artifactId>icu4j</artifactId>
       <version>3.8</version>
     </dependency>
-    <dependency>
-      <groupId>xml-apis</groupId>
-      <artifactId>xml-apis</artifactId>
-      <version>1.3.04</version>
-    </dependency>
 
     <!-- Plexus -->
     <dependency>