Remove redundant Windows-only import

Author: mrBliss

Win32-network/src/System/Win32/Async/IOManager.hsc

@@ -29,7 +29,6 @@ import Control.Exception ( Exception (..)
                          , bracket
                          , catch
                          , throwIO
-                         , throwTo
                          )
 import Control.Monad (when)
 import Data.Word (Word32)

Win32-network/src/System/Win32/Async/Overlapped.hsc

@@ -19,9 +19,7 @@ module System.Win32.Async.Overlapped
 #if MIN_VERSION_Win32 (2, 7, 0)
 import System.Win32.File ( LPOVERLAPPED, OVERLAPPED (..) )
 #endif
-import Foreign ( Ptr
-               , nullPtr
-               )
+import Foreign (Ptr)
 import Foreign.Storable (Storable (..))
 import System.Win32.Types
 

io-sim-classes/src/Control/Monad/Class/MonadTimer.hs

@@ -25,8 +25,6 @@ import           Data.Time.Clock (DiffTime, diffTimeToPicoseconds)
 #if defined(__GLASGOW_HASKELL__) && !defined(mingw32_HOST_OS) && !defined(__GHCJS__)
 import qualified GHC.Event as GHC (TimeoutKey, getSystemTimerManager,
                      registerTimeout, unregisterTimeout, updateTimeout)
-#else
-import           Control.Monad (when)
 #endif
 
 import           Control.Monad.Class.MonadFork