netlist: update .cabal file: remove dependency on pretty

Author: pheaver

netlist/netlist.cabal

@@ -26,7 +26,7 @@ Library
                         Language.Netlist.Util
   other-modules:        Language.Netlist.Examples
 
-  build-depends:      binary, pretty, containers
+  build-depends:      binary, containers
   if flag(base4)
      build-depends:   base == 4.*, syb
   else