Refactor wall zoning, remove streaming

src/Dodge/Update/Cloud.hs

@@ -1,11 +1,8 @@
 module Dodge.Update.Cloud where
 import Dodge.Zoning.Creature
 import Dodge.Data
-import Dodge.Zone
 import Geometry.Vector3D
 import LensHelp
-import StreamingHelp
-import qualified Streaming.Prelude as S
 import Data.Foldable
 cloudPoisonDamage :: Cloud -> World -> World
 cloudPoisonDamage c w = w & dodamagesto (filter f $ crsNearPoint clpos w)