QPID-3070: revert sessionKnownCompleted change

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/grkvlt-network-20110301@1078855 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/transport/SessionDelegate.java b/qpid/java/common/src/main/java/org/apache/qpid/transport/SessionDelegate.java
index 92c22f6..5d8e4d5 100644
--- a/qpid/java/common/src/main/java/org/apache/qpid/transport/SessionDelegate.java
+++ b/qpid/java/common/src/main/java/org/apache/qpid/transport/SessionDelegate.java
@@ -92,7 +92,7 @@
             known = new RangeSet();
         }
 
-        if (ranges != null && ranges.size() > 0)
+        if (ranges != null)
         {
             for (Range range : ranges)
             {
@@ -104,7 +104,7 @@
             }
         }
 
-        if (known != null && known.size() > 0)
+        if (known != null)
         {
             ssn.sessionKnownCompleted(known);
         }