[cleanup] Replace dead example/test URL (#17061)

* Replace dead example URL in documentation
* Replace primary Youtube test URL
* Remove obsolete `test_youtube_lists` module

Closes #12263
Authored by: bashonly

yt_dlp/extractor/youtube/_mistakes.py

@@ -47,8 +47,8 @@ class YoutubeTruncatedURLIE(YoutubeBaseInfoExtractor):
             'Did you forget to quote the URL? Remember that & is a meta '
             'character in most shells, so you want to put the URL in quotes, '
             'like  yt-dlp '
-            '"https://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '
-            ' or simply  yt-dlp BaW_jenozKc  .',
+            '"https://www.youtube.com/watch?feature=foo&v=YE7VzlLtp-4" '
+            ' or simply  yt-dlp YE7VzlLtp-4  .',
             expected=True)