Delete hangout contacts

[paascal]

Hello I find this annoying... I can't seem to find how to remove make disappear make vanish the names of people that I exchanges with on hangout... Event if they are deleted from my contacts the best I can do is hide them....

This doesnt make any sense to me and I would like them removed from my phone or be lobotomized...

Is there a simple.way to delete those unwanted names?

Thanks for the help