remove duplicated HeaderArg export

rvion · rvion · commit 96abac7ef2eb · 2016-04-13T15:41:28.000+02:00
it is also 2 lines below
diff --git a/servant-js/src/Servant/JS/Internal.hs b/servant-js/src/Servant/JS/Internal.hs
@@ -23,7 +23,6 @@ module Servant.JS.Internal
   , HasForeignType(..)
   , GenerateList(..)
   , NoTypes
-  , HeaderArg
   , ArgType(..)
   , HeaderArg(..)
   , QueryArg(..)
