How to uninstall the old version of TexLive without the uninst.bat?

[chen p]

Dear Tex-Live Member Team:

I used to be a user of Tex-Live. Today, I want to uninstall the old
version of TexLive 2021 package that I installed, but I am facing some
issues and cannot find the uninstallation program.

Would you be able to provide me with some uninstallation advice? Thank
you very much.

Sincerely,
Your Faithful.

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