fix：课程调整不更改网管课课程组有效期

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

@@ -3151,10 +3151,6 @@ public class CourseScheduleServiceImpl extends BaseServiceImpl<Long, CourseSched
 					if (DateUtil.minutesBetween(practiceGroup.getCoursesExpireDate(), newCourseSchedule.getEndClassTime()) > 0) {
 						throw new BizException("调整失败: 截止时间超过课程有效期");
 					}
-					practiceGroup.setCoursesStartDate(courseScheduleDao.getFirstTime(practiceGroup.getId(),PRACTICE.getCode()));
-					practiceGroup.setCoursesExpireDate(courseScheduleDao.getLastTime(practiceGroup.getId(),PRACTICE.getCode()));
-					practiceGroup.setUpdateTime(date);
-					practiceGroupDao.update(practiceGroup);
 				}
 			}
         }