Remove negative resists from of madness ego

There's precedent for not giving negative stats on egos and this isn't really adding much to the ego

game/modules/tome/data/general/objects/egos/wizard-hat.lua

@@ -202,8 +202,6 @@ newEntity{
 		},
 		combat_mindcrit = resolvers.mbonus_material(4, 4),
 		combat_mentalresist = resolvers.mbonus_material(20, 10),
-		confusion_immune = -0.2,
-		fear_immune = -0.2,
 	},
 }