Streamly: Data: Cleanup Data directory as per hlint suggestions

src/Streamly/Data/Unfold.hs

@@ -1,12 +1,9 @@
-{-# LANGUAGE BangPatterns              #-}
 {-# LANGUAGE CPP                       #-}
 {-# LANGUAGE ExistentialQuantification #-}
 {-# LANGUAGE FlexibleContexts          #-}
 {-# LANGUAGE PatternSynonyms           #-}
 {-# LANGUAGE RankNTypes #-}
-{-# LANGUAGE RecordWildCards #-}
 {-# LANGUAGE ScopedTypeVariables #-}
-{-# LANGUAGE TupleSections #-}
 
 #include "inline.hs"