Prune dead code from JmsTransactionManager#doBegin

Author: cbeams

org.springframework.jms/src/main/java/org/springframework/jms/connection/JmsTransactionManager.java

@@ -87,6 +87,7 @@
  * @see TransactionAwareConnectionFactoryProxy
  * @see org.springframework.jms.core.JmsTemplate
  */
+@SuppressWarnings("serial")
 public class JmsTransactionManager extends AbstractPlatformTransactionManager
 		implements ResourceTransactionManager, InitializingBean {
 
@@ -191,14 +192,6 @@ protected void doBegin(Object transaction, TransactionDefinition definition) {
 					getConnectionFactory(), txObject.getResourceHolder());
 		}
 		catch (JMSException ex) {
-			if (session != null) {
-				try {
-					session.close();
-				}
-				catch (Throwable ex2) {
-					// ignore
-				}
-			}
 			if (con != null) {
 				try {
 					con.close();