Remove unused extension

Author: fgaz

src/HaskellCI.hs

@@ -1,6 +1,5 @@
 {-# LANGUAGE DataKinds           #-}
 {-# LANGUAGE MultiWayIf          #-}
-{-# LANGUAGE NamedFieldPuns      #-}
 {-# LANGUAGE OverloadedStrings   #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TypeApplications    #-}