Export subHelper directly rather than doing a module export

yesod-core/Yesod/Core/Dispatch.hs

@@ -30,7 +30,7 @@ module Yesod.Core.Dispatch
     , defaultMiddlewaresNoLogging
       -- * WAI subsites
     , WaiSubsite (..)
-    , module YCCD
+    , subHelper
     ) where
 
 import Prelude hiding (exp)
@@ -70,7 +70,6 @@ import Control.Monad (when)
 import qualified Paths_yesod_core
 import Data.Version (showVersion)
 import qualified System.Random.MWC as MWC
-import Yesod.Core.Class.Dispatch as YCCD (subHelper)
 
 -- | Convert the given argument into a WAI application, executable with any WAI
 -- handler. This function will provide no middlewares; if you want commonly