Fix warning in test case
Fixes [AMQNET-505]. (See https://issues.apache.org/jira/browse/AMQNET-505)

diff --git a/src/test/csharp/QueueBrowserTests.cs b/src/test/csharp/QueueBrowserTests.cs
index 2d9919b..5e9bf6c 100644
--- a/src/test/csharp/QueueBrowserTests.cs
+++ b/src/test/csharp/QueueBrowserTests.cs
@@ -250,7 +250,6 @@
                 IEnumerator enumeration = browser.GetEnumerator();
                 while (enumeration.MoveNext())
                 {
-                    ITextMessage message = enumeration.Current as ITextMessage;
                     browsed++;
                 }
             }