remove redundant modifiers found by checkstyle

messaging/src/main/java/org/springframework/security/messaging/access/expression/MessageExpressionConfigAttribute.java

@@ -44,7 +44,7 @@ class MessageExpressionConfigAttribute implements ConfigAttribute, EvaluationCon
 	 * @param authorizeExpression the {@link Expression} to use. Cannot be null
 	 * @param matcher the {@link MessageMatcher} used to match the messages.
 	 */
-	public MessageExpressionConfigAttribute(Expression authorizeExpression, MessageMatcher<?> matcher) {
+	MessageExpressionConfigAttribute(Expression authorizeExpression, MessageMatcher<?> matcher) {
 		Assert.notNull(authorizeExpression, "authorizeExpression cannot be null");
 		Assert.notNull(matcher, "matcher cannot be null");
 		this.authorizeExpression = authorizeExpression;

messaging/src/main/java/org/springframework/security/messaging/util/matcher/AbstractMessageMatcherComposite.java

@@ -38,7 +38,7 @@ abstract class AbstractMessageMatcherComposite<T> implements MessageMatcher<T> {
 	 *
 	 * @param messageMatchers the {@link MessageMatcher} instances to try
 	 */
-	public AbstractMessageMatcherComposite(List<MessageMatcher<T>> messageMatchers) {
+	AbstractMessageMatcherComposite(List<MessageMatcher<T>> messageMatchers) {
 		notEmpty(messageMatchers, "messageMatchers must contain a value");
 		if (messageMatchers.contains(null)) {
 			throw new IllegalArgumentException(
@@ -54,7 +54,7 @@ abstract class AbstractMessageMatcherComposite<T> implements MessageMatcher<T> {
 	 * @param messageMatchers the {@link MessageMatcher} instances to try
 	 */
 	@SafeVarargs
-	public AbstractMessageMatcherComposite(MessageMatcher<T>... messageMatchers) {
+	AbstractMessageMatcherComposite(MessageMatcher<T>... messageMatchers) {
 		this(asList(messageMatchers));
 	}
 

messaging/src/test/java/org/springframework/security/messaging/context/AuthenticationPrincipalArgumentResolverTests.java

@@ -265,7 +265,7 @@ public class AuthenticationPrincipalArgumentResolverTests {
 			this.property = property;
 		}
 
-		public CopyUserPrincipal(CopyUserPrincipal toCopy) {
+		CopyUserPrincipal(CopyUserPrincipal toCopy) {
 			this.property = toCopy.property;
 		}