Is it rude to delete text messages with someone else if you're not interested in talking but not blocking them just yet?

So I got fed up with an old colleague and our conversation. Started off well, waned midway through December, and nowadays it is rather disappointing that I am trying to keep the friendship going and they do little.

So rather than block them I deleted the text messages so that they were removed from the "list" of people I text. That way not tempted to contact them but if they want to pull their weight & contact me they can.

I'll likely block by January if no response I'm giving them opportunities to salvage things

Is it rude to delete text messages with someone else if you're not interested in talking but not blocking them just yet?
Post Opinion