课时统计导出调整

src/main/java/com/xjrsoft/module/classtime/controller/ClassTimeStatisticsController.java

@@ -7,10 +7,6 @@ import com.alibaba.fastjson.JSON;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
-import com.google.gson.Gson;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
 import com.xjrsoft.common.enums.DeleteMark;
 import com.xjrsoft.common.exception.MyException;
 import com.xjrsoft.common.model.result.RT;