SLING-5377 Update Groovy to 2.4.5

* remove optional groovy-xml

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1720275 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 97c62d9..a7eadd0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -78,12 +78,6 @@
       <scope>provided</scope>
     </dependency>
     <dependency>
-      <groupId>org.codehaus.groovy</groupId>
-      <artifactId>groovy-xml</artifactId>
-      <version>${groovy.version}</version>
-      <scope>provided</scope>
-    </dependency>
-    <dependency>
       <groupId>org.apache.felix</groupId>
       <artifactId>org.apache.felix.scr.annotations</artifactId>
       <scope>provided</scope>