Removed HEAD <version> element. From now on we do not want to list HEAD versions and the <versions> element represent the *released* versions only.

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@115739 13f79535-47bb-0310-9956-ffa450edef68

examples/simple-xdocs/project.xml

@@ -50,9 +50,9 @@
 
   <versions>
     <version>
-      <id>H0.1</id>
-      <name>HEAT 0.1</name>
-      <tag>HEAD</tag>
+      <id>0.1</id>
+      <name>0.1</name>
+      <tag>MAVEN_EX_0_1</tag>
     </version>
   </versions>
   -->