Remove plugin version that's inherited from parent.

git-svn-id: https://svn.apache.org/repos/asf/maven/doxia/doxia/trunk@1293687 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index eee468f..cbd4cf3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -441,7 +441,6 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>2.8</version>
             <reportSets>
               <reportSet>
                 <id>non-aggregate</id>