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.

BuildFlags.hs

@@ -31,16 +31,6 @@ buildFlags = filter (not . null)
 #else
 #warning Building without local pairing.
 #endif
-#ifdef WITH_S3
-	, "S3"
-#else
-#warning Building without S3.
-#endif
-#ifdef WITH_WEBDAV
-	, "WebDAV"
-#else
-#warning Building without WebDAV.
-#endif
 #ifdef WITH_INOTIFY
 	, "Inotify"
 #endif
@@ -69,6 +59,8 @@ buildFlags = filter (not . null)
 	-- listed.
 	, "Feeds"
 	, "Testsuite"
+	, "S3"
+	, "WebDAV"
 	]
 
 -- Not a complete list, let alone a listing transitive deps, but only
@@ -81,12 +73,8 @@ dependencyVersions = map fmt $ sortBy (comparing (CI.mk . fst))
 	, ("http-client", VERSION_http_client)
 	, ("persistent-sqlite", VERSION_persistent_sqlite)
 	, ("cryptonite", VERSION_cryptonite)
-#ifdef WITH_S3
 	, ("aws", VERSION_aws)
-#endif
-#ifdef WITH_WEBDAV
 	, ("DAV", VERSION_DAV)
-#endif
 #ifdef WITH_TORRENTPARSER
 	, ("torrent", VERSION_torrent)
 #endif