refactor: 更新flyway

backend/src/main/resources/db/migration/V29__de1.6.sql

@@ -17,8 +17,6 @@ ALTER TABLE `panel_link` ADD COLUMN `user_id` BIGINT(20) NULL DEFAULT NULL ;
 
 ALTER TABLE `panel_link_mapping` ADD COLUMN `user_id` BIGINT(20) NULL DEFAULT NULL ;
 
-ALTER TABLE `panel_link`CHANGE COLUMN `user_id` `user_id` BIGINT(20) NOT NULL ,DROP PRIMARY KEY;
-
 ALTER TABLE `panel_group`
 ADD COLUMN `mobile_layout` tinyint(1) NULL DEFAULT 0 COMMENT '启用移动端布局' AFTER `remark`;