[2023] remove dogs and bikers from tier 1's

If you take the dogs out of early POIs, the player never has a chance to learn how to deal with A dog before potentially an entire PACK of dogs comes running for them. Yeah, It's a hard lesson and it might cause a newbie a death or two, but they gotta learn how to deal with it somehow- And one dog in a t1 POI, typically set up so that the dog is the ONLY thing you have to deal with when it comes for you, is a way easier learning experience than a dog pack on day 3-4 running you down and feeling potently unfair.