Remove early buses and update documentation
This feature is what ensures we return correct routes given the time frame and is the beginning of the journey to ensure that our documentation makes sense -- it had been outdated for quite a while. It is also at this point that ithaca-transit-microservice has begun to parse TCAT's 3rd party vendor links using the protobuf API, and although this does not affect how ithaca-transit-backend functions, it is important to note that it is around this time period that the old links have stopped working, and that TCAT has advised us to use the following:
Trip Updates: https://realtimetcatbus.availtec.com/InfoPoint/GTFS-Realtime.ashx?&Type=TripUpdate
Vehicle Positions: https://realtimetcatbus.availtec.com/InfoPoint/GTFS-Realtime.ashx?&Type=VehiclePosition&serverid=0
Alerts: https://realtimetcatbus.availtec.com/InfoPoint/GTFS-Realtime.ashx?&Type=Alert