Helper/HAFAS: Remove now-unused get_json_p function

}

sub get_json_p {

	my ( $self, $cache, $url ) = @_;

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

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

		return $promise->resolve($content);

	}

	$self->{log}->debug("get_json_p($url)");

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

	  ->then(

		sub {

			my ($tx) = @_;

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

				$self->{log}->warn(

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

				);

				$promise->reject(

					"GET $url returned HTTP $err->{code} $err->{message}");

				return;

			}

			my $body

			  = encode( 'utf-8', decode( 'ISO-8859-15', $tx->res->body ) );

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

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

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

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

			my $json = decode_json($body);

			if ( not $json ) {

				$self->{log}->debug("hafas->get_json_p($url): empty response");

				$promise->reject("GET $url returned empty response");

				return;

			}

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

			$promise->resolve($json);

			return;

		}

	)->catch(

		sub {

			my ($err) = @_;

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

			$promise->reject($err);

			return;

		}

	)->wait;

	return $promise;

}

sub get_route_timestamps_p {

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