Remove some unneeded extensions

paf31 · paf31 · commit 4eaadff80de1 · 2015-02-20T21:43:54.000-08:00
diff --git a/src/Control/Monad/Supply.hs b/src/Control/Monad/Supply.hs
@@ -14,9 +14,6 @@
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 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE UndecidableInstances #-}
 
 module Control.Monad.Supply where
 
