estimate_trip_position: Remove dead code

	# timestamps are provided in UNIX seconds and not as DateTime objects.

	my $now = DateTime->now( time_zone => 'Europe/Berlin' )->epoch;

	if (

		0

		and $now <= (

			$route[0][2]{rt_arr} // $route[0][2]{sched_arr}

			  // $route[0][2]{rt_dep} // $route[0][2]{sched_dep} // 0

		)

	  )

	{

		return [ $route[0][2]{lat}, $route[0][2]{lon} ];

	}

	my $prev_ts;

	for my $i ( 0 .. $#route ) {

		my $ts = $route[$i][2]{rt_arr} // $route[$i][2]{sched_arr}