procedure SSLDelGroup(GroupName: String; GroupID: Word)
Delete group from SSL.
GroupName should be equal to the last passed in procedure SSLAddGroup or procedure SSLUpdateGroup with this GroupID.
As answer you will receive OnSSLChangeResponse event.
Example:

procedure TMainForm.Button3Click(Sender: TObject);
begin
  ICQClient1.SSLAddGroup('General', 0008);
  ICQClient1.SSLDelGroup('General', 0008);
end;