Polish

spring-web/src/main/java/org/springframework/http/server/reactive/AbstractServerHttpResponse.java

@@ -39,7 +39,6 @@ import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
-import org.springframework.util.StringUtils;
 
 /**
  * Base class for {@link ServerHttpResponse} implementations.

spring-web/src/main/java/org/springframework/web/server/session/CookieWebSessionIdResolver.java

@@ -24,7 +24,6 @@ import org.springframework.http.HttpCookie;
 import org.springframework.http.ResponseCookie;
 import org.springframework.util.Assert;
 import org.springframework.util.MultiValueMap;
-import org.springframework.util.StringUtils;
 import org.springframework.web.server.ServerWebExchange;
 
 /**

spring-web/src/test/java/org/springframework/http/codec/json/Jackson2SmileEncoderTests.java

@@ -18,16 +18,11 @@ package org.springframework.http.codec.json;
 
 import java.io.IOException;
 import java.io.UncheckedIOException;
-import java.util.Arrays;
 import java.util.List;
-import java.util.Map;
 
-import com.fasterxml.jackson.annotation.JsonTypeInfo;
-import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.junit.Test;
 import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
 import reactor.test.StepVerifier;
 
 import org.springframework.core.ResolvableType;

spring-web/src/test/java/org/springframework/web/client/ExtractingResponseErrorHandlerTests.java

@@ -32,7 +32,6 @@ import org.springframework.http.converter.json.MappingJackson2HttpMessageConvert
 
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
-import static org.mockito.Mockito.mock;
 
 /**
  * @author Arjen Poutsma