Delete unused imports

spring-web/src/test/java/org/springframework/http/codec/json/Jackson2SmileDecoderTests.java

@@ -38,7 +38,6 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.springframework.core.ResolvableType.forClass;
 import static org.springframework.http.MediaType.APPLICATION_JSON;
-import static org.springframework.http.MediaType.APPLICATION_STREAM_JSON;
 
 /**
  * Unit tests for {@link Jackson2SmileDecoder}.

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

@@ -30,7 +30,6 @@ import org.springframework.core.io.buffer.AbstractDataBufferAllocatingTestCase;
 import org.springframework.core.io.buffer.DataBuffer;
 import org.springframework.core.io.buffer.DataBufferUtils;
 import org.springframework.core.io.buffer.support.DataBufferTestUtils;
-import org.springframework.http.MediaType;
 import org.springframework.http.codec.Pojo;
 import org.springframework.http.codec.ServerSentEvent;
 import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;

spring-web/src/test/java/org/springframework/web/server/session/InMemoryWebSessionStoreTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -21,7 +21,6 @@ import java.time.Instant;
 
 import org.junit.Test;
 
-import org.springframework.util.Assert;
 import org.springframework.web.server.WebSession;
 
 import static junit.framework.TestCase.assertSame;