Remove obsolete repository definition for artifact:pom task

Author: uschindler

build.xml

@@ -310,9 +310,7 @@
     </copy>
     <property name="maven.deploy.pom" location="${maven-build-dir}/pom-deploy.xml"/>
     <property name="maven.local.settings" location="${maven-build-dir}/settings.xml"/>
-    <artifact:pom id="maven.deploy.pom" file="${maven.deploy.pom}">
-      <remoteRepository refid="mvn.maven-central.backup" />
-    </artifact:pom>
+    <artifact:pom id="maven.deploy.pom" file="${maven.deploy.pom}"/>
   </target>
 
   <target name="-maven-uptodate">