How to delete/drop an old friend?

How do you manage to delete an old dumb friend?

I know him for more than 20 years.

He is dumbest one that still comes from my toxic past. We met in the elemantary school.

When I don't call him to meet or hang out, he is always tripping. And when we meet, he always gives silly life advices for "my good". Like he knows everything in the world.

How to delete and drop these kind of toxic dumb idiots from your life? He is a big obstacle in my life to improve myself socially really. He swears at everyone I meet in life. Even when I have a fight with my parents, he curses them.

Sick of his never growing mind. In his 30s he still doesn't even work or produce anything in life. But criticizes everything. Judges everything.

When we played retro games in our childhood, it was good. But that's just childhood memories and should stay there.

How to delete/drop an old friend?
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