Remove APIs marked for removal

See gh-30604

spring-web/src/test/java/org/springframework/http/codec/multipart/DefaultPartHttpMessageReaderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -420,9 +420,6 @@ class DefaultPartHttpMessageReaderTests  {
 
 	@SuppressWarnings("removal")
 	static Stream<Arguments> messageReaders() {
-		DefaultPartHttpMessageReader streaming = new DefaultPartHttpMessageReader();
-		streaming.setStreaming(true);
-
 		DefaultPartHttpMessageReader inMemory = new DefaultPartHttpMessageReader();
 		inMemory.setMaxInMemorySize(1000);
 
@@ -430,7 +427,6 @@ class DefaultPartHttpMessageReaderTests  {
 		onDisk.setMaxInMemorySize(100);
 
 		return Stream.of(
-				arguments(named("streaming", streaming)),
 				arguments(named("in-memory", inMemory)),
 				arguments(named("on-disk", onDisk)));
 	}