Remove AI cavarly

[Senni]

I agree, all the times I've made it to the prince wave is because of exploiting the cavalry AI of the knights and it doesn't even suit the Nords. However, Nord cavalry does make it harder for our horsemen since they continuously have enemies on their tail and really can't afford a misstep. More archers and pikemen could work here, but I have a feeling the kiting will become too easy..

Hardest bit about the knight wave for cav is the archers, even before the nerf. Get your approach wrong and you get your horse taken out from underneath you :/.

EDIT: should have mentioned dodging cav is easy