fix bugs

stmms-biz/src/main/java/cn/com/qmth/stmms/biz/mark/service/Impl/MarkServiceImpl.java

@@ -313,8 +313,14 @@ public class MarkServiceImpl implements MarkService {
         subjectService.updateScore(group.getExamId(), group.getSubjectCode(), false,
                 sumTotalScore(group.getExamId(), group.getSubjectCode()));
         resetGroup(group);
-        libraryDao.deleteByExamIdAndSubjectCodeAndGroupNumber(group.getExamId(), group.getSubjectCode(),
-                group.getNumber());
+        if (group.getStatus() == MarkStatus.FORMAL) {
+            libraryDao.deleteByExamIdAndSubjectCodeAndGroupNumber(group.getExamId(), group.getSubjectCode(),
+                    group.getNumber());
+        }
+        if (group.getStatus() == MarkStatus.TRIAL) {
+            trialLibraryDao.deleteByExamIdAndSubjectCodeAndGroupNumber(group.getExamId(), group.getSubjectCode(),
+                    group.getNumber());
+        }
         groupDao.updateBuildTime(group.getExamId(), group.getSubjectCode(), group.getNumber(), null);
     }