Remove unnecessary imports

Crypto/Hash/SHAKE.hs

@@ -28,7 +28,6 @@ import           Data.Bits
 import           Data.Data
 import           Data.Word (Word8, Word32)
 
-import           Data.Proxy (Proxy(..))
 import           GHC.TypeLits (Nat, KnownNat, type (+))
 import           Crypto.Internal.Nat
 

Crypto/PubKey/Curve25519.hs

@@ -35,7 +35,6 @@ import           Crypto.Internal.Compat
 import           Crypto.Internal.Imports
 import           Crypto.Internal.ByteArray (ByteArrayAccess, ScrubbedBytes, Bytes, withByteArray)
 import qualified Crypto.Internal.ByteArray as B
-import           Crypto.Error (CryptoFailable(..))
 import           Crypto.Random
 
 -- | A Curve25519 Secret key

tests/ECC.hs

@@ -7,7 +7,6 @@ import           Crypto.Error
 import qualified Crypto.ECC as ECC
 
 import           Data.ByteArray.Encoding
-import           Data.ByteString (ByteString)
 
 import Imports
 

tests/KAT_OTP.hs

@@ -8,7 +8,6 @@ where
 
 import Crypto.Hash.Algorithms (SHA1(..), SHA256(..), SHA512(..))
 import Crypto.OTP
-import Data.ByteString (ByteString)
 import Imports
 
 -- | Test values from Appendix D of http://tools.ietf.org/html/rfc4226