feat: 增加根据学生id进行查询

src/main/java/com/seecoder/dataanalysis/data/dao/competency/CompetencyTreeDao.java

@@ -4,7 +4,5 @@ import com.seecoder.dataanalysis.data.entity.competency.CompetencyTree;
 import org.springframework.data.mongodb.repository.MongoRepository;
 
 public interface CompetencyTreeDao extends MongoRepository<CompetencyTree, String> {
-
     CompetencyTree findByStudentId(Integer studentId);
-
 }