Remove generic and flat instances

src/Dodge/Data/Modification.hs

@@ -5,7 +5,6 @@
 
 module Dodge.Data.Modification where
 
-import Flat
 import LinearHelp ()
 import Control.Lens
 import Data.Aeson
@@ -28,7 +27,7 @@ data Modification
         , _mdExternalID2 :: Int
         , _mdUpdate :: MdWdWd
         }
-    deriving (Eq, Ord, Show, Read, Generic, Flat)
+    deriving (Eq, Ord, Show, Read) --Generic, Flat)
 
 makeLenses ''Modification
 deriveJSON defaultOptions ''Modification