删除数据库升级方法；插入数据库改到Activity，否则application insert会报错；

lizhanwei

2020-01-08 12c468b38b46e61f9c2dcec27684e9ea1d54adcf

 app/src/main/java/safeluck/drive/evaluation/DB/failitems/FailProjDao.java

@@ -43,4 +43,6 @@
    @Query("SELECT COUNT(*)  from fail_projects where subject=:subject_id")
    LiveData<Integer> getSubject(int subject_id);

    @Query("delete from fail_projects")
    void deleteAll();
}