Clean up warnings in spring-jms

Author: sbrannen

spring-jms/src/main/java/org/springframework/jms/core/JmsMessagingTemplate.java

@@ -375,7 +375,6 @@ protected Message<?> convertJmsMessage(javax.jms.Message message) {
 		}
 	}
 
-	@SuppressWarnings("ThrowableResultOfMethodCallIgnored")
 	protected MessagingException convertJmsException(JmsException ex) {
 		if (ex instanceof org.springframework.jms.support.destination.DestinationResolutionException ||
 				ex instanceof InvalidDestinationException) {

spring-jms/src/main/java/org/springframework/jms/listener/adapter/MessagingMessageListenerAdapter.java

@@ -72,7 +72,6 @@ public void onMessage(javax.jms.Message jmsMessage, Session session) throws JMSE
 		}
 	}
 
-	@SuppressWarnings("unchecked")
 	protected Message<?> toMessagingMessage(javax.jms.Message jmsMessage) {
 		try {
 			return (Message<?>) getMessagingMessageConverter().fromMessage(jmsMessage);

spring-jms/src/test/java/org/springframework/jms/config/MethodJmsListenerEndpointTests.java

@@ -63,8 +63,6 @@
 
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
-import static org.mockito.BDDMockito.verify;
-import static org.mockito.Mockito.mock;
 
 /**
  * @author Stephane Nicoll

spring-jms/src/test/java/org/springframework/jms/core/JmsTemplateTransactedTests.java

@@ -19,7 +19,6 @@
 import javax.jms.Session;
 
 import static org.mockito.BDDMockito.*;
-import static org.mockito.Mockito.mock;
 
 /**
  * @author Juergen Hoeller

spring-jms/src/test/java/org/springframework/jms/listener/DefaultMessageListenerContainerTests.java

@@ -87,7 +87,6 @@ public void recoverResetBackOff() {
 		verify(execution, times(1)).nextBackOff(); // only on attempt as the second one lead to a recovery
 	}
 
-	@SuppressWarnings("unchecked")
 	private DefaultMessageListenerContainer createContainer(BackOff backOff, ConnectionFactory connectionFactory) {
 
 		Destination destination = new Destination() {};

spring-jms/src/test/java/org/springframework/jms/listener/adapter/MessagingMessageListenerAdapterTests.java

@@ -128,6 +128,7 @@ private void initializeFactory(DefaultMessageHandlerMethodFactory factory) {
 	}
 
 
+	@SuppressWarnings("unused")
 	private static class SampleBean {
 
 		public Message<String> echo(Message<String> input) {

spring-jms/src/test/java/org/springframework/jms/support/converter/MessagingMessageConverterTests.java

@@ -32,8 +32,6 @@
 
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
-import static org.mockito.BDDMockito.verify;
-import static org.mockito.Mockito.mock;
 
 /**
  *