fix：创建班级校验 班级在学校下唯一

teachcloud-common/src/main/java/com/qmth/teachcloud/common/service/impl/BasicStudentServiceImpl.java

@@ -220,7 +220,6 @@ public class BasicStudentServiceImpl extends ServiceImpl<BasicStudentMapper, Bas
                     } else {
                         BasicClazz basicClazz = basicClazzService.getOne(new QueryWrapper<BasicClazz>().lambda()
                                 .eq(BasicClazz::getSchoolId, schoolId)
-                                .eq(BasicClazz::getMajorId, majorId)
                                 .eq(BasicClazz::getClazzName, clazzName));
                         if (Objects.isNull(basicClazz)) {
                             // 新增一个clazz