public static function deleteUserByTerminalId($terminal_id)
 {
     TerminalUser::where('terminal_id', '=', $terminal_id)->delete();
 }
 public static function deleteTerminal($terminal_id)
 {
     TerminalUser::where('terminal_id', '=', $terminal_id)->delete();
     Terminal::where('terminal_id', '=', $terminal_id)->delete();
 }