diff --git a/spring-webmvc/src/main/java/org/springframework/web/servlet/function/DefaultEntityResponseBuilder.java b/spring-webmvc/src/main/java/org/springframework/web/servlet/function/DefaultEntityResponseBuilder.java
index 924017ec489..25e0003f527 100644
--- a/spring-webmvc/src/main/java/org/springframework/web/servlet/function/DefaultEntityResponseBuilder.java
+++ b/spring-webmvc/src/main/java/org/springframework/web/servlet/function/DefaultEntityResponseBuilder.java
@@ -252,11 +252,6 @@ final class DefaultEntityResponseBuilder<T> implements EntityResponse.Builder<T>
 			this.entityType = entityType;
 		}
 
-		private static <T> boolean isResource(T entity) {
-			return !(entity instanceof InputStreamResource) &&
-					(entity instanceof Resource);
-		}
-
 		@Override
 		public T entity() {
 			return this.entity;
diff --git a/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/AbstractHandlerMethodMapping.java b/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/AbstractHandlerMethodMapping.java
index bfda2d48494..d96a4e14d60 100644
--- a/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/AbstractHandlerMethodMapping.java
+++ b/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/AbstractHandlerMethodMapping.java
@@ -35,9 +35,6 @@ import java.util.stream.Collectors;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 
-import kotlin.reflect.KFunction;
-import kotlin.reflect.jvm.ReflectJvmMapping;
-
 import org.springframework.aop.support.AopUtils;
 import org.springframework.beans.factory.BeanFactoryUtils;
 import org.springframework.beans.factory.InitializingBean;
@@ -805,15 +802,4 @@ public abstract class AbstractHandlerMethodMapping<T> extends AbstractHandlerMap
 		}
 	}
 
-	/**
-	 * Inner class to avoid a hard dependency on Kotlin at runtime.
-	 */
-	private static class KotlinDelegate {
-
-		static private boolean isSuspend(Method method) {
-			KFunction<?> function = ReflectJvmMapping.getKotlinFunction(method);
-			return function != null && function.isSuspend();
-		}
-	}
-
 }
diff --git a/spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ResponseBodyEmitterReturnValueHandler.java b/spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ResponseBodyEmitterReturnValueHandler.java
index ee02ad1700a..05431f0bc31 100644
--- a/spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ResponseBodyEmitterReturnValueHandler.java
+++ b/spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ResponseBodyEmitterReturnValueHandler.java
@@ -61,8 +61,6 @@ import org.springframework.web.method.support.ModelAndViewContainer;
  */
 public class ResponseBodyEmitterReturnValueHandler implements HandlerMethodReturnValueHandler {
 
-	private final List<HttpMessageConverter<?>> messageConverters;
-
 	private final List<HttpMessageConverter<?>> sseMessageConverters;
 
 	private final ReactiveTypeHandler reactiveHandler;
@@ -76,7 +74,6 @@ public class ResponseBodyEmitterReturnValueHandler implements HandlerMethodRetur
 	 */
 	public ResponseBodyEmitterReturnValueHandler(List<HttpMessageConverter<?>> messageConverters) {
 		Assert.notEmpty(messageConverters, "HttpMessageConverter List must not be empty");
-		this.messageConverters = messageConverters;
 		this.sseMessageConverters = initSseConverters(messageConverters);
 		this.reactiveHandler = new ReactiveTypeHandler();
 	}
@@ -93,7 +90,6 @@ public class ResponseBodyEmitterReturnValueHandler implements HandlerMethodRetur
 			ReactiveAdapterRegistry registry, TaskExecutor executor, ContentNegotiationManager manager) {
 
 		Assert.notEmpty(messageConverters, "HttpMessageConverter List must not be empty");
-		this.messageConverters = messageConverters;
 		this.sseMessageConverters = initSseConverters(messageConverters);
 		this.reactiveHandler = new ReactiveTypeHandler(registry, executor, manager);
 	}