Remove a certain postmeta for all pages

Hey :slight_smile:

I have imported some pages from a website. The pages are still having some postmeta which we will not be using so I do not think there is any reason for that postmeta too stuff the database.

So, how can I remove a certain postmeta from the database for all the pages?

I would love an example. One of the names of the postmeta is "above-sidebar".

Sincerely,
Mika