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 5f7abc1..8e97f45 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,7 +41,6 @@
         <url.version>1.5.2</url.version>
         <org.ops4j.pax.logging.DefaultServiceLog.level>INFO</org.ops4j.pax.logging.DefaultServiceLog.level>
         <felix.shell>false</felix.shell>
-        <sling.java.version>6</sling.java.version>
         <sling.hc.samples.version>1.0.7-SNAPSHOT</sling.hc.samples.version>
         <sling.hc.core.version>1.2.3-SNAPSHOT</sling.hc.core.version>
     </properties>