SWS-918 Fix compiler warnings

The project contains various easy to fix compiler warnings like unused
imports, raw types and no longer needed @SuppressWarnings("unchecked").

This change removes:

 * unused imports
 * raw types
 * no longer needed @SuppressWarnings("unchecked")

Issue: SWS-918
https://jira.spring.io/browse/SWS-918

spring-ws-security/src/main/java/org/springframework/ws/soap/security/support/SpringSecurityUtils.java

@@ -38,7 +38,6 @@ public abstract class SpringSecurityUtils {
 	 * @throws DisabledException if the account is disabled
 	 * @throws LockedException if the account is locked
 	 */
-	@SuppressWarnings("deprecation")
 	public static void checkUserValidity(UserDetails user)
 			throws AccountExpiredException, CredentialsExpiredException, DisabledException, LockedException {
 		if (!user.isAccountNonLocked()) {

spring-ws-security/src/main/java/org/springframework/ws/soap/security/wss4j/Wss4jSecurityInterceptor.java

@@ -597,7 +597,6 @@ public class Wss4jSecurityInterceptor extends AbstractWsSecurityInterceptor impl
 	}
 
 	@Override
-	@SuppressWarnings("unchecked")
 	protected void validateMessage(SoapMessage soapMessage, MessageContext messageContext)
 			throws WsSecurityValidationException {
 		if (logger.isDebugEnabled()) {

spring-ws-security/src/test/java/org/springframework/ws/soap/security/support/KeyManagersFactoryBeanTest.java

@@ -17,10 +17,8 @@
 package org.springframework.ws.soap.security.support;
 
 import javax.net.ssl.KeyManager;
-import javax.net.ssl.TrustManager;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import org.junit.Test;
 

spring-ws-security/src/test/java/org/springframework/ws/soap/security/support/TrustManagersFactoryBeanTest.java

@@ -19,7 +19,6 @@ package org.springframework.ws.soap.security.support;
 import javax.net.ssl.TrustManager;
 
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import org.junit.Test;
 

spring-ws-security/src/test/java/org/springframework/ws/soap/security/xwss/callback/jaas/CertificateLoginModule.java

@@ -18,6 +18,8 @@ package org.springframework.ws.soap.security.xwss.callback.jaas;
 
 import java.security.Principal;
 import java.util.Iterator;
+import java.util.Map;
+
 import javax.security.auth.Subject;
 import javax.security.auth.callback.CallbackHandler;
 import javax.security.auth.login.LoginException;
@@ -48,8 +50,8 @@ public class CertificateLoginModule implements LoginModule {
 	@Override
 	public void initialize(Subject subject,
 						   CallbackHandler callbackHandler,
-						   java.util.Map sharedState,
-						   java.util.Map options) {
+						   Map<String,?> sharedState,
+						   Map<String,?> options) {
 		this.subject = subject;
 	}
 
@@ -73,8 +75,8 @@ public class CertificateLoginModule implements LoginModule {
 	}
 
 	private String getName(Subject subject) {
-		for (Iterator iterator = subject.getPrincipals().iterator(); iterator.hasNext();) {
-			Principal principal = (Principal) iterator.next();
+		for (Iterator<Principal> iterator = subject.getPrincipals().iterator(); iterator.hasNext();) {
+			Principal principal = iterator.next();
 			if (principal instanceof X500Principal) {
 				return principal.getName();
 			}

spring-ws-security/src/test/java/org/springframework/ws/soap/security/xwss/callback/jaas/PlainTextLoginModule.java

@@ -20,6 +20,8 @@ import java.security.Principal;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Map;
+
 import javax.security.auth.Subject;
 import javax.security.auth.callback.Callback;
 import javax.security.auth.callback.CallbackHandler;
@@ -69,8 +71,8 @@ public class PlainTextLoginModule implements LoginModule {
 	@Override
 	public void initialize(Subject subject,
 						   CallbackHandler callbackHandler,
-						   java.util.Map sharedState,
-						   java.util.Map options) {
+						   Map<String,?> sharedState,
+						   Map<String,?> options) {
 		this.subject = subject;
 		this.callbackHandler = callbackHandler;
 	}
@@ -126,9 +128,9 @@ public class PlainTextLoginModule implements LoginModule {
 	public boolean logout() {
 		principals.clear();
 
-		Iterator iterator = subject.getPrincipals(SimplePrincipal.class).iterator();
+		Iterator<SimplePrincipal> iterator = subject.getPrincipals(SimplePrincipal.class).iterator();
 		while (iterator.hasNext()) {
-			SimplePrincipal principal = (SimplePrincipal) iterator.next();
+			SimplePrincipal principal = iterator.next();
 			subject.getPrincipals().remove(principal);
 		}