Remove unnecessary import packages

hippo4j-spring-boot/hippo4j-spring-boot-starter-adapter/hippo4j-spring-boot-starter-adapter-web/src/main/java/cn/hippo4j/springboot/starter/adapter/web/WebAdapterAutoConfiguration.java

@@ -26,8 +26,6 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.SearchStrategy;
-import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
-import org.springframework.boot.web.server.WebServer;
 import org.springframework.boot.web.servlet.server.ServletWebServerFactory;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;