How to remove BD SSL certificate and/or BD root certificate?

I migrated a website to a new host and was having trouble setting up Let's Encrypt. I proceeded to view the site without the LE cert working, not realizing that BD was going to install it's own cert for this site. HOW DO I REMOVE THIS CERTIFICATE AND PREVENT THIS "FEATURE" FROM DOING THIS IN THE FUTURE?

I am beyond frustrated. I can't believe BD does this without warning, or any obvious way to undo it.

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