code: func (api *Client) KickUserFromChannelContext(ctx context.Context, channelID, user string) (err error) {
  	values := url.Values{
  		"token":   {api.token},
  		"channel": {channelID},
  		"user":    {user},
  	}
  
  	_, err = api.channelRequest(ctx, "channels.kick", values)
  	return err
  }
docs: // KickUserFromChannelContext kicks a user from a given channel with a custom context
  // see https://api.slack.com/methods/channels.kick