Fix scaffolded devel.hs

yesod/scaffold/devel.hs.cg

@@ -1,7 +1,7 @@
 {-# LANGUAGE PackageImports #-}
 import "~project~" Application (getApplicationDev)
 import Network.Wai.Handler.Warp
-    (runSettings, defaultSettings, settingsPort, settingsHost)
+    (runSettings, defaultSettings, settingsPort)
 import Control.Concurrent (forkIO)
 import System.Directory (doesFileExist, removeFile)
 import System.Exit (exitSuccess)
@@ -13,7 +13,6 @@ main = do
     (port, app) <- getApplicationDev
     forkIO $ runSettings defaultSettings
         { settingsPort = port
-        , settingsHost = "0.0.0.0"
         } app
     loop