remove old fail compatibility imports that are obsolete ?

hledger-lib/Hledger/Data/Dates.hs

@@ -75,8 +75,6 @@ module Hledger.Data.Dates (
 )
 where
 
-import Prelude ()
-import "base-compat-batteries" Prelude.Compat hiding (fail)
 import qualified "base-compat-batteries" Control.Monad.Fail.Compat as Fail (MonadFail, fail)
 import Control.Applicative.Permutations
 import Control.Monad (unless)

hledger-lib/Hledger/Read/Common.hs

@@ -100,8 +100,6 @@ module Hledger.Read.Common (
 )
 where
 --- * imports
-import Prelude ()
-import "base-compat-batteries" Prelude.Compat hiding (fail, readFile)
 import qualified "base-compat-batteries" Control.Monad.Fail.Compat as Fail (fail)
 import Control.Monad.Except (ExceptT(..), runExceptT, throwError)
 import Control.Monad.State.Strict hiding (fail)

hledger-lib/Hledger/Read/CsvReader.hs

@@ -30,8 +30,6 @@ module Hledger.Read.CsvReader (
   tests_CsvReader,
 )
 where
-import Prelude ()
-import "base-compat-batteries" Prelude.Compat hiding (fail)
 import qualified "base-compat-batteries" Control.Monad.Fail.Compat as Fail (fail)
 import Control.Exception          (IOException, handle, throw)
 import Control.Monad              (liftM, unless, when)

hledger-lib/Hledger/Read/JournalReader.hs

@@ -63,8 +63,6 @@ module Hledger.Read.JournalReader (
 )
 where
 --- * imports
--- import qualified Prelude (fail)
--- import "base-compat-batteries" Prelude.Compat hiding (fail, readFile)
 import qualified "base-compat-batteries" Control.Monad.Fail.Compat as Fail (fail)
 import qualified Control.Exception as C
 import Control.Monad (forM_, when, void)

hledger/Hledger/Cli/Commands/Add.hs

@@ -15,8 +15,6 @@ module Hledger.Cli.Commands.Add (
 )
 where
 
-import Prelude ()
-import "base-compat-batteries" Prelude.Compat hiding (fail)
 import Control.Exception as E
 import Control.Monad (when)
 import Control.Monad.Trans.Class