clean unused import

src/test/java/io/spring/application/article/ArticleQueryServiceTest.java

@@ -10,7 +10,6 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mybatis.spring.boot.test.autoconfigure.MybatisTest;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.context.annotation.Import;
 import org.springframework.test.context.junit4.SpringRunner;