Fix unused import error in ReactorClientHttpConnector

Author: sdeleuze

spring-web/src/main/java/org/springframework/http/client/reactive/ReactorClientHttpConnector.java

@@ -29,7 +29,6 @@
 import reactor.netty.resources.ConnectionProvider;
 import reactor.netty.resources.LoopResources;
 
-import org.springframework.context.Lifecycle;
 import org.springframework.context.SmartLifecycle;
 import org.springframework.http.HttpMethod;
 import org.springframework.lang.Nullable;