Remove Tokyo Metro Open Data

Link has been dead since early August, removing dead service

README.md

@@ -614,7 +614,6 @@ API | Description | Auth | HTTPS | Link |
 | Transport for Switzerland | Official Swiss Public Transport Open Data | `apiKey` | Yes | [Go!](https://opentransportdata.swiss/en/) |
 | Transport for The Netherlands | NS, only trains | `apiKey` | No | [Go!](http://www.ns.nl/reisinformatie/ns-api) |
 | Transport for The Netherlands | OVAPI, country-wide public transport | No | Yes | [Go!](https://github.com/skywave/KV78Turbo-OVAPI/wiki) |
-| Transport for Tokyo, Japan | Tokyo Metro | `apiKey` | Yes | [Go!](https://developer.tokyometroapp.jp/info) |
 | Transport for Toronto, Canada | TTC | No | Yes | [Go!](https://myttc.ca/developers) |
 | Transport for United States | NextBus API | No | No | [Go!](http://www.nextbus.com/xmlFeedDocs/NextBusXMLFeed.pdf) |
 | Transport for Vancouver, Canada | TransLink | `OAuth` | Yes | [Go!](https://developer.translink.ca/) |