whereis: Don't include yt: prefix when showing url to content retrieved with youtube-dl

I don't think this was really intentional behavior. It may be that it was
useful to include it so it could be passed to rmurl, since without it rmurl
would not actually remove the url. Since that was changed earlier today,
now seems like a good time to clean up the display of these urls.

This commit was sponsored by Jochen Bartl on Patreon.

CHANGELOG

@@ -14,6 +14,8 @@ git-annex (8.20210311) UNRELEASED; urgency=medium
     special remote, fix a bug that caused the url to to not be removed.
   * unregisterurl: Fix a bug that caused an url to not be unregistered
     when it is claimed by a special remote other than the web.
+  * whereis: Don't include yt: prefix when showing url to content
+    retrieved with youtube-dl.
   * Work around some buggy webdav server behavior involving renaming files.
   * Make --debug also enable debugging in child git-annex processes.
   * fsck: When --from is used in combination with --all or similar options,

Command/Whereis.hs

@@ -131,7 +131,8 @@ getUUIDUrls key uuids remotemap = forM uuids $ \uu -> (,)
 
 getRemoteUrls :: Key -> Remote -> Annex [URLString]
 getRemoteUrls key remote
-	| uuid remote == webUUID = getWebUrls key
+	| uuid remote == webUUID = 
+		map (fst . getDownloader) <$> getWebUrls key
 	| otherwise = (++)
 		<$> askremote
 		<*> claimedurls