Ejecting a Player
Source GM Core pg. 18
Ultimately, there's no place for a serially or deliberately disruptive player in your gaming group. Such behavior is not fair to you or the other players, and the problematic player needs to either modify their behavior or leave the group.
Before meeting with the problematic player, discuss the situation with the other players in private to ensure you make the right call and figure out what repercussions you expect and whether the game should continue at all.
When you break the news to the problematic player, be compassionate but firmly state the decision is final and restate which behaviors are responsible. If parts of having the player in the game were rewarding or you want the player to remain a friend, make that clear and decide if a player's behavior merits other changes to your relationship.
Before meeting with the problematic player, discuss the situation with the other players in private to ensure you make the right call and figure out what repercussions you expect and whether the game should continue at all.
When you break the news to the problematic player, be compassionate but firmly state the decision is final and restate which behaviors are responsible. If parts of having the player in the game were rewarding or you want the player to remain a friend, make that clear and decide if a player's behavior merits other changes to your relationship.