Remove unneeded `@SuppressWarnings("NullAway")`

Closes gh-32542

gradle/spring-module.gradle

@@ -13,7 +13,7 @@ dependencies {
 	jmh 'org.openjdk.jmh:jmh-generator-annprocess:1.37'
 	jmh 'org.openjdk.jmh:jmh-generator-bytecode:1.37'
 	jmh 'net.sf.jopt-simple:jopt-simple'
-	errorprone 'com.uber.nullaway:nullaway:0.10.24'
+	errorprone 'com.uber.nullaway:nullaway:0.10.26'
 	errorprone 'com.google.errorprone:error_prone_core:2.9.0'
 }
 

spring-jdbc/src/main/java/org/springframework/jdbc/datasource/lookup/AbstractRoutingDataSource.java

@@ -134,7 +134,6 @@ public abstract class AbstractRoutingDataSource extends AbstractDataSource imple
 	 * @see #getResolvedDataSources()
 	 * @see #getResolvedDefaultDataSource()
 	 */
-	@SuppressWarnings("NullAway")
 	public void initialize() {
 		if (this.targetDataSources == null) {
 			throw new IllegalArgumentException("Property 'targetDataSources' is required");

spring-messaging/src/main/java/org/springframework/messaging/handler/annotation/reactive/MessageMappingMessageHandler.java

@@ -305,7 +305,6 @@ public class MessageMappingMessageHandler extends AbstractMethodMessageHandler<C
 	 * @param destinations the destinations
 	 * @return new array with the processed destinations or the same array
 	 */
-	@SuppressWarnings("NullAway")
 	protected String[] processDestinations(String[] destinations) {
 		if (this.valueResolver != null) {
 			destinations = Arrays.stream(destinations)

spring-messaging/src/main/java/org/springframework/messaging/support/MessageHeaderAccessor.java

@@ -645,7 +645,6 @@ public class MessageHeaderAccessor {
 			return super.getRawHeaders();
 		}
 
-		@SuppressWarnings("NullAway")
 		public void setImmutable() {
 			if (!this.mutable) {
 				return;

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/DefaultDatabaseClient.java

@@ -383,7 +383,6 @@ final class DefaultDatabaseClient implements DatabaseClient {
 			return fetch().rowsUpdated().then();
 		}
 
-		@SuppressWarnings("NullAway")
 		private ResultFunction getResultFunction(Supplier<String> sqlSupplier) {
 			BiFunction<Connection, String, Statement> statementFunction = (connection, sql) -> {
 				if (logger.isDebugEnabled()) {

spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClient.java

@@ -374,7 +374,6 @@ class DefaultWebTestClient implements WebTestClient {
 					DefaultWebTestClient.this.entityResultConsumer, getResponseTimeout());
 		}
 
-		@SuppressWarnings("NullAway")
 		private ClientRequest.Builder initRequestBuilder() {
 			return ClientRequest.create(this.httpMethod, initUri())
 					.headers(headersToUse -> {

spring-test/src/main/java/org/springframework/test/web/servlet/result/ViewResultMatchers.java

@@ -47,7 +47,6 @@ public class ViewResultMatchers {
 	/**
 	 * Assert the selected view name with the given Hamcrest {@link Matcher}.
 	 */
-	@SuppressWarnings("NullAway")
 	public ResultMatcher name(Matcher<? super String> matcher) {
 		return result -> {
 			ModelAndView mav = result.getModelAndView();
@@ -61,7 +60,6 @@ public class ViewResultMatchers {
 	/**
 	 * Assert the selected view name.
 	 */
-	@SuppressWarnings("NullAway")
 	public ResultMatcher name(String expectedViewName) {
 		return result -> {
 			ModelAndView mav = result.getModelAndView();

spring-web/src/main/java/org/springframework/http/codec/multipart/MultipartParser.java

@@ -116,7 +116,6 @@ final class MultipartParser extends BaseSubscriber<DataBuffer> {
 	}
 
 	@Override
-	@SuppressWarnings("NullAway")
 	protected void hookOnNext(DataBuffer value) {
 		this.requestOutstanding.set(false);
 		this.state.get().onNext(value);

spring-web/src/main/java/org/springframework/web/client/DefaultRestClient.java

@@ -543,7 +543,6 @@ final class DefaultRestClient implements RestClient {
 			}
 		}
 
-		@SuppressWarnings("NullAway")
 		private ClientHttpRequest createRequest(URI uri) throws IOException {
 			ClientHttpRequestFactory factory;
 			if (DefaultRestClient.this.interceptors != null) {

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ServletInvocableHandlerMethod.java

@@ -215,7 +215,6 @@ public class ServletInvocableHandlerMethod extends InvocableHandlerMethod {
 
 		private final MethodParameter returnType;
 
-		@SuppressWarnings("NullAway")
 		public ConcurrentResultHandlerMethod(@Nullable Object result, ConcurrentResultMethodParameter returnType) {
 			super((Callable<Object>) () -> {
 				if (result instanceof Exception exception) {