update clustering documentation wrt rdbmk
@@ -21,8 +21,6 @@ Clustering is currently supported for the MongoDB and RDBMs storage subsystems.
To use clustering, simply connect multiple Oak instances with the same backend storage.
-Please note the RDBMS storage is work in progress,
-and will soon be fully tested and supported as well.
Both the MongoDB and the RDBMs storage subsystems internally use the same
cluster mechanism.
