Refactor wall zoning, remove streaming

src/Dodge/Creature/ReaderUpdate.hs

@@ -19,17 +19,13 @@ import FoldableHelp
 import Dodge.Data
 import Dodge.Creature.Volition
 import Dodge.Base
-import Dodge.Zone
 import Geometry
 
-import qualified Data.IntSet as IS
 import qualified IntMapHelp as IM
 import Control.Lens
 import Control.Applicative
 import Data.Maybe
 import Data.Bifunctor
---import StreamingHelp
-import qualified Streaming.Prelude as S
 
 overrideMeleeCloseTarget :: Creature -> Creature
 overrideMeleeCloseTarget cr = maybe cr (tryMeleeAttack cr) (_targetCr $ _crIntention cr)