Country of origin

I’m being asked to submit country of origin on listings in European marketplace
I do not want to sell accross Europe
Do I delete my listings on the respective countries ?
Does this affect UK listings ?
They are all currently inactive in other countries

Yes, delete them.

If I were you, I would complete the fields, if you are able to. Usually, these requirements quickly follow to different countries and if you ignore them, eventually, they will keep piling up. Right now I have 1000s of these incomplete requirements as I ignored everything for a long time and some of the listings are already removed by Amazon.