more RawFilePath conversion

nukeFile replaced with removeWhenExistsWith removeLink, which allows
using RawFilePath. Utility.Directory cannot use RawFilePath since setup
does not depend on posix.

This commit was sponsored by Graham Spencer on Patreon.

Assistant/Threads/SanityChecker.hs

@@ -66,7 +66,7 @@ sanityCheckerStartupThread startupdelay = namedThreadUnchecked "SanityCheckerSta
 	ifM (not <$> liftAnnex (inRepo checkIndexFast))
 		( do
 			notice ["corrupt index file found at startup; removing and restaging"]
-			liftAnnex $ inRepo $ nukeFile . indexFile
+			liftAnnex $ inRepo $ removeWhenExistsWith removeLink . indexFile
 			{- Normally the startup scan avoids re-staging files,
 			 - but with the index deleted, everything needs to be
 			 - restaged. -}
@@ -80,7 +80,7 @@ sanityCheckerStartupThread startupdelay = namedThreadUnchecked "SanityCheckerSta
 	 - will be automatically regenerated. -}
 	unlessM (liftAnnex $ Annex.Branch.withIndex $ inRepo $ Git.Repair.checkIndexFast) $ do
 		notice ["corrupt annex/index file found at startup; removing"]
-		liftAnnex $ liftIO . nukeFile =<< fromRepo gitAnnexIndex
+		liftAnnex $ liftIO . removeWhenExistsWith removeLink =<< fromRepo gitAnnexIndex
 
 	{- Fix up ssh remotes set up by past versions of the assistant. -}
 	liftIO $ fixUpSshRemotes