get_travel_distance: warn about removed stations (TODO: re-add them)

	my $route_ref    = $journey->{route};

	my $polyline_ref = $journey->{polyline};

	if ( not $to ) {

		$self->{log}

		  ->warn("Journey $journey->{id} has no to_name for EVA $to_eva");

	}

	if ( not $from ) {

		$self->{log}

		  ->warn("Journey $journey->{id} has no from_name for EVA $from_eva");

	}

	my $distance_polyline     = 0;

	my $distance_intermediate = 0;

	my $distance_beeline      = 0;