Remove NH-2520

Author: hazzik

releasenotes.txt

@@ -155,7 +155,6 @@
 ** New Feature
     * [NH-1530] - Add support for XmlDocType and XDocType for Oracle
     * [NH-2319] - IQueryable support for persistent collections
-    * [NH-2520] - New type TimestampUtc
     * [NH-3488] - Strongly Typed Updates and Deletes
     * [NH-3771] - Implement setting to enable Batch Update with Optimistic Locking control
     * [NH-3905] - Support async: Blocking IO leads to ThreadPool starvation and limits scalability