Helper/HAFAS: remove unused get_json_p method

	return Travel::Status::DE::HAFAS::get_service($service);

}

sub get_json_p {

	my ( $self, $url, %opt ) = @_;

	my $cache   = $self->{main_cache};

	my $promise = Mojo::Promise->new;

	if ( $opt{realtime} ) {

		$cache = $self->{realtime_cache};

	}

	$opt{encoding} //= 'ISO-8859-15';

	if ( my $content = $cache->thaw($url) ) {

		return $promise->resolve($content);

	}

	$self->{user_agent}->request_timeout(5)->get_p( $url => $self->{header} )

	  ->then(

		sub {

			my ($tx) = @_;

			if ( my $err = $tx->error ) {

				$promise->reject(

"hafas->get_json_p($url) returned HTTP $err->{code} $err->{message}"

				);

				return;

			}

			my $body = decode( $opt{encoding}, $tx->res->body );

			$body =~ s{^TSLs[.]sls = }{};

			$body =~ s{;$}{};

			$body =~ s{(}{(}g;

			$body =~ s{)}{)}g;

			my $json = JSON->new->decode($body);

			$cache->freeze( $url, $json );

			$promise->resolve($json);

			return;

		}

	)->catch(

		sub {

			my ($err) = @_;

			$self->{log}->info("hafas->get_json_p($url): $err");

			$promise->reject("hafas->get_json_p($url): $err");

			return;

		}

	)->wait;

	return $promise;

}

sub get_departures_p {

	my ( $self, %opt ) = @_;