Removed the S3 and WebDAV build flags

So these special remotes are always supported.

IIRC these build flags were added because the dep chains were a bit too
long, or perhaps because the libraries were not available in Debian stable,
or something like that. That was long ago, those reasons no longer apply,
and users get confused when builtin special remotes are not available, so
it seems best to remove the build flags now.

If this does cause a problem it can be reverted of course..

This commit was sponsored by Jochen Bartl on Patreon.

Remote/List.hs

@@ -5,8 +5,6 @@
  - Licensed under the GNU AGPL version 3 or higher.
  -}
 
-{-# LANGUAGE CPP #-}
-
 module Remote.List where
 
 import qualified Data.Map as M
@@ -25,17 +23,13 @@ import qualified Git
 import qualified Remote.Git
 import qualified Remote.GCrypt
 import qualified Remote.P2P
-#ifdef WITH_S3
 import qualified Remote.S3
-#endif
 import qualified Remote.Bup
 import qualified Remote.Directory
 import qualified Remote.Rsync
 import qualified Remote.Web
 import qualified Remote.BitTorrent
-#ifdef WITH_WEBDAV
 import qualified Remote.WebDAV
-#endif
 import qualified Remote.Adb
 import qualified Remote.Tahoe
 import qualified Remote.Glacier
@@ -50,17 +44,13 @@ remoteTypes = map adjustExportImportRemoteType
 	[ Remote.Git.remote
 	, Remote.GCrypt.remote
 	, Remote.P2P.remote
-#ifdef WITH_S3
 	, Remote.S3.remote
-#endif
 	, Remote.Bup.remote
 	, Remote.Directory.remote
 	, Remote.Rsync.remote
 	, Remote.Web.remote
 	, Remote.BitTorrent.remote
-#ifdef WITH_WEBDAV
 	, Remote.WebDAV.remote
-#endif
 	, Remote.Adb.remote
 	, Remote.Tahoe.remote
 	, Remote.Glacier.remote