import vk_api
tocen = "<tocen>"
chat_id = <chat_id>
user_id = <user_id>
vk = vk_api.VkApi(token=token)
vk._auth_token()
vk.method("messages.removeChatUser",
    {
    "chat_id" : chat_id,
    "user_id" : user_id
    }
)