Remove dependency on

harpocrates · harpocrates · commit 9035eab1f0e5 · 2017-01-15T18:05:35.000-08:00
diff --git a/language-rust.cabal b/language-rust.cabal
@@ -41,7 +41,6 @@ library
                      , DeriveFunctor
 
   build-depends:       base >=4.9 && <4.10
-                     , pretty >=1.1 && <1.2
                      , wl-pprint-annotated >= 0.0.1 && < 0.0.2
                      , transformers >=0.5 && <0.6
                      , array >=0.5 && <0.6
