中途加入学生，不加除去加入班级逻辑

mec-biz/src/main/java/com/ym/mec/biz/service/impl/StudentRegistrationServiceImpl.java

@@ -606,7 +606,7 @@ public class StudentRegistrationServiceImpl extends BaseServiceImpl<Long, Studen
                 waitPayOrder.setStatus(DealStatusEnum.CLOSE);
                 studentPaymentOrderService.update(waitPayOrder);
                 //添加学生
-                classGroupStudentMapperService.addStudents(waitPayOrder.getClassGroupId(), studentRegistration.getUserId().toString(), GroupType.MUSIC);
+                //classGroupStudentMapperService.addStudents(waitPayOrder.getClassGroupId(), studentRegistration.getUserId().toString(), GroupType.MUSIC);
             } else {
                 //获取当前月
                 Integer month = Integer.parseInt(DateUtil.getMonth(nowDate));