Delete 3 tidb configs that have been deleted in code (#12401)#12428

Merged

ti-chi-bot merged 2 commits intopingcap:release-6.1from ti-chi-bot:cherry-pick-12401-to-release-6.1

Dec 27, 2022

-10

Commits on Dec 27, 2022

This is an automated cherry-pick of pingcap#12401

TomShawn
authored and
ti-chi-bot
committed
Update upgrade-tidb-using-tiup.md
TomShawn
authored