bug fix

safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/PaperServiceImpl.java

@@ -258,7 +258,6 @@ public class PaperServiceImpl extends ServiceImpl<PaperMapper, PaperDO> implemen
 
         List<QuestionDO> questions = parseResult.getQuestions();
         // 绑定试卷试题（含试题号）
-        LocalDateTime now = LocalDateTime.now();
         List<PaperQuestionRelDO> rels = new ArrayList<>(questions.size());
         for (int i = 0; i < questions.size(); i++) {
             PaperQuestionRelDO rel = new PaperQuestionRelDO();