The first router I bought for broadband in the days when ISPs did not supply routers did not have Wifi.
These days the domestic market for routers that don't have Wifi is probably very small.
Depending on the type of FTTC cabinet that you are connected to, you might want to choose a router that does g.inp. I would think that most products would let you disable the Wifi if you really want,
Michael Chare