Revert "Update .well-known redirects to the new dav endpoint"

This reverts commit d831c255ea.

.htaccess

@@ -38,8 +38,8 @@
   RewriteRule .* - [env=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
   RewriteRule ^\.well-known/host-meta /public.php?service=host-meta [QSA,L]
   RewriteRule ^\.well-known/host-meta\.json /public.php?service=host-meta-json [QSA,L]
-  RewriteRule ^\.well-known/carddav /remote.php/dav/ [R=301,L]
-  RewriteRule ^\.well-known/caldav /remote.php/dav/ [R=301,L]
+  RewriteRule ^\.well-known/carddav /remote.php/carddav/ [R=301,L]
+  RewriteRule ^\.well-known/caldav /remote.php/caldav/ [R=301,L]
   RewriteRule ^remote/(.*) remote.php [QSA,L]
   RewriteRule ^(build|tests|config|lib|3rdparty|templates)/.* - [R=404,L]
   RewriteRule ^(\.|autotest|occ|issue|indie|db_|console).* - [R=404,L]