This is actually an optional dependency of Core, not horde.

diff --git a/horde/package.xml b/horde/package.xml
index fc68463..d664c62 100644 (file)
--- a/horde/package.xml
+++ b/horde/package.xml
@@ -2157,10 +2157,6 @@ applications.</description>
     <name>Feed</name>
     <channel>pear.horde.org</channel>
    </package>
-   <package>
-    <name>Kolab_Session</name>
-    <channel>pear.horde.org</channel>
-   </package>
   </optional>
  </dependencies>
  <usesrole>