How can I make my Macbook forget the Personal Hotspot settings

I'm having issues connecting my Macbook Pro (2018) with my Iphone. It does work, but it takes several attempts and sometimes the connection doesn't work at all. It looks like my Macbook stored old info from my Iphone. For example, when I change the hotspot password in my Iphone, the connection still works (sometimes). And on other occasions an old iPhone name appears in the list and is connected.

Anyhow, I want my MacBook simply to completely forget all it knows about my iPhone regarding the personal hotspot. But how do I do this?