diff --git a/sql/gamedb2006_migrate_230920_01.sql b/sql/gamedb2006_migrate_230920_01.sql
deleted file mode 100644
index aeeecb19..00000000
--- a/sql/gamedb2006_migrate_230920_01.sql
+++ /dev/null
@@ -1,17 +0,0 @@
-begin;
-
-CREATE TABLE `t_mail` (
-  `idx` bigint NOT NULL AUTO_INCREMENT COMMENT '自增id',
-  `account_id` varchar(60) NOT NULL DEFAULT '' COMMENT '账号id(channel + "_" + gameid + "_" + openid)',
-  `mailid` bigint NOT NULL DEFAULT '0' COMMENT '邮件id',
-  `confirmed` int(11) NOT NULL DEFAULT '0' COMMENT 'confirmed',
-  `attachments` varchar(255) CHARACTER SET utf8 NOT NULL DEFAULT '' COMMENT '附件',
-  `createtime` int(11) NOT NULL DEFAULT '0' COMMENT '创建时间',
-  `modifytime` int(11) NOT NULL DEFAULT '0' COMMENT '修改时间',
-  PRIMARY KEY (`idx`),
-  KEY `account_id_mailid` (`account_id`, `mailid`)
-) ENGINE=InnoDB AUTO_INCREMENT=10001 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
-
-insert into version (version) values(2023091301);
-
-commit;