Revert "Fix Bug #550: AI修复"

This reverts commit 16c42ca108.

openhis-server-new/sql/add_priority_to_sys_notice.sql

@@ -0,0 +1,10 @@
+-- 为 sys_notice 表添加优先级字段
+-- 执行前请先备份数据库
+
+ALTER TABLE sys_notice ADD COLUMN priority VARCHAR(10) DEFAULT '2';
+
+-- 添加注释
+COMMENT ON COLUMN sys_notice.priority IS '优先级（1高 2中 3低）';
+
+-- 为现有数据设置默认优先级
+UPDATE sys_notice SET priority = '2' WHERE priority IS NULL;