Remove unused generic-deriving dependency

Now that we depend on GHC 7.4 as the minimum, the conditional
`generic-deriving` dependency is never used.

pointed.cabal

@@ -72,9 +72,6 @@ library
   build-depends: base >= 4.5 && < 5,
                  data-default-class >= 0.0.1 && < 0.2
 
-  if impl(ghc >= 7.0 && < 7.2)
-    build-depends: generic-deriving >= 1.11 && < 1.13
-
   if impl(ghc >= 7.2 && < 7.6)
     build-depends: ghc-prim
 

src/Data/Copointed.hs

@@ -10,6 +10,7 @@ module Data.Copointed where
 
 import Control.Applicative
 import Data.Default.Class
+import GHC.Generics
 
 #ifdef MIN_VERSION_comonad
 import Control.Comonad.Trans.Env
@@ -59,12 +60,6 @@ import qualified Control.Monad.Trans.Writer.Lazy as Lazy
 import qualified Control.Monad.Trans.Writer.Strict as Strict
 #endif
 
-#if defined(MIN_VERSION_generic_deriving)
-import Generics.Deriving
-#else
-import GHC.Generics
-#endif
-
 -- | 'Copointed' does not require a 'Functor', as the only relationship
 -- between 'copoint' and 'fmap' is given by a free theorem.
 

src/Data/Pointed.hs

@@ -13,6 +13,7 @@ import Control.Arrow
 import Control.Applicative
 import qualified Data.Monoid as Monoid
 import Data.Default.Class
+import GHC.Generics
 
 #ifdef MIN_VERSION_comonad
 import Control.Comonad
@@ -89,12 +90,6 @@ import Data.HashMap.Lazy (HashMap)
 import qualified Data.HashMap.Lazy as HashMap
 #endif
 
-#if defined(MIN_VERSION_generic_deriving)
-import Generics.Deriving
-#else
-import GHC.Generics
-#endif
-
 class Pointed p where
   point :: a -> p a