Revert "Make Orbit repository available for aggregation"

This reverts commit 13aa9ff597a0f3a38dadab7c703dd0f23b898329.
diff --git a/features/org.eclipse.graphiti.site/feature.xml b/features/org.eclipse.graphiti.site/feature.xml
index 18a5085..893c17e 100644
--- a/features/org.eclipse.graphiti.site/feature.xml
+++ b/features/org.eclipse.graphiti.site/feature.xml
@@ -35,7 +35,6 @@
 

    <url>

       <update url="http://www.eclipse.org/downloads/download.php?file=/graphiti/updates/0.10.0/&amp;protocol=http&amp;format=xml"/>

-      <discovery label="Orbit Repository" url="http://download.eclipse.org/tools/orbit/downloads/drops/R20120526062928/repository"/>

    </url>

 

    <includes