Update for spring-projects/spring-framework#28701

Author: sdeleuze

samples/webflux-netty/src/main/java/com/example/webflux/WebfluxApplication.java

@@ -8,7 +8,7 @@
 import org.springframework.web.bind.annotation.RestController;
 
 @SpringBootApplication
-@ImportRuntimeHints({ NettyRuntimeHints.class, WebfluxRuntimeHints.class })
+@ImportRuntimeHints(NettyRuntimeHints.class)
 public class WebfluxApplication {
 
     public static void main(String[] args) {