Remove superflous sling.java.version=6 as it's the default now

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1687505 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index b69478a..5a084f4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -40,10 +40,6 @@
         Webconsole plugin for Sling Health Check Services
     </description>
 
-    <properties>
-        <sling.java.version>6</sling.java.version>
-    </properties>
-
     <scm>
         <connection>scm:svn:http://svn.apache.org/repos/asf/sling/trunk/bundles/extensions/healthcheck/webconsole</connection>
         <developerConnection>scm:svn:https://svn.apache.org/repos/asf/sling/trunk/bundles/extensions/healthcheck/webconsole</developerConnection>