ZoneInterface: remove the DoNothing action.

src/App/ZoneInterface.purs

@@ -118,8 +118,6 @@ data Action
   | Initialize
   | Finalize
 
-  | DoNothing String
-
   -- New entries.
   | UpdateNewSRRForm  Update_SRR_Form
   | UpdateNewMXForm   Update_MX_Form
@@ -253,9 +251,6 @@ handleAction = case _ of
     state <- H.get
     H.raise $ Log $ SimpleLog "Finalized!"
 
-  DoNothing _ -> do
-    H.raise $ Log $ SimpleLog "This action does nothing (at least for now)"
-
   UpdateNewSRRForm rr_update -> case rr_update of
     Update_SRR_Type val -> do
       let new_type = fromMaybe "unknown" (baseRecords !! val)