feat：12月活动

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

@@ -692,8 +692,4 @@ public class CourseScheduleStudentPaymentServiceImpl extends BaseServiceImpl<Lon
 			courseScheduleStudentPaymentDao.batchUpdate(needUpdates);
 		}
 	}
-
-	public static void main(String[] args) {
-		System.out.println(new BigDecimal(12).subtract(BigDecimal.ZERO));
-	}
 }