Discard changes to upgrade-tidb-using-tiup.md

Author: qiancai

upgrade-tidb-using-tiup.md

@@ -67,7 +67,6 @@ summary: TiUP 可用于 TiDB 升级。升级过程中需注意不支持 TiFlash
 - TiDB v8.5.1 [Release Notes](/releases/release-8.5.1.md)
 - TiDB v8.5.2 [Release Notes](/releases/release-8.5.2.md)
 - TiDB v8.5.3 [兼容性变更](/releases/release-8.5.3.md#兼容性变更)
-- TiDB v8.5.4 [兼容性变更](/releases/release-8.5.4.md#兼容性变更)
 
 ### 2.2 升级 TiUP 或更新 TiUP 离线镜像