Remove generic and flat instances

src/Dodge/Data/Distortion.hs

@@ -5,7 +5,6 @@
 
 module Dodge.Data.Distortion where
 
-import Flat
 import Geometry
 import LinearHelp ()
 import Data.Aeson
@@ -13,6 +12,6 @@ import Data.Aeson.TH
 
 data Distortion
     = RadialDistortion Point2 Point2 Point2 Float
-    deriving (Eq, Ord, Show, Read, Generic, Flat)
+    deriving (Eq, Ord, Show, Read) --Generic, Flat)
 
 deriveJSON defaultOptions ''Distortion