Remove analytics and routeid

[alanna-zhou]

• we're not using analytics at all -- it's deadcode essentially
• this is using space on the server bc we're caching these routes
• routeid is confusing developers because it changes for every route (even if they're the same route!) and it doesn't correspond to GTFS' routeID! we're having to use routeNumber as a result to match routeID in GTFS which is not good