Let the parent do it's work.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1747308 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 9e2e002..b65e591 100644
--- a/pom.xml
+++ b/pom.xml
@@ -58,9 +58,6 @@
   </distributionManagement>
 
   <properties>
-    <maven.compiler.source>1.6</maven.compiler.source>
-    <maven.compiler.target>1.6</maven.compiler.target>
-
     <mdoVersion>2.0.0</mdoVersion>
     <mavenArchiverVersion>3.1.0</mavenArchiverVersion>
     <mavenFilteringVersion>3.1.1</mavenFilteringVersion>