Convert: LANGUAGE: rm DefaultSignatures

Author: Anton-Latukha

src/Nix/Convert.hs

@@ -1,6 +1,5 @@
 {-# LANGUAGE AllowAmbiguousTypes #-}
 {-# LANGUAGE ConstraintKinds #-}
-{-# LANGUAGE DefaultSignatures #-}
 {-# LANGUAGE DeriveFunctor #-}
 {-# LANGUAGE DeriveFoldable #-}
 {-# LANGUAGE DeriveTraversable #-}