ditch confirm/tx test since the two are mutually exclusive again

Author: rade

test/src/com/rabbitmq/client/test/functional/Confirm.java

@@ -206,18 +206,6 @@ public void testSelect()
         }
     }
 
-    public void testTx()
-        throws IOException, InterruptedException
-    {
-        channel.txSelect();
-        publishN("", "confirm-test", false, false, false);
-        channel.txCommit();
-        waitAcks();
-        publishN("", "confirm-test", false, false, false);
-        channel.txRollback();
-        waitAcks();
-    }
-
     /* Publish NUM_MESSAGES messages and wait for confirmations. */
     public void confirmTest(String exchange, String queueName,
                             boolean persistent, boolean mandatory,