[yt_live_chat] deactivate for now.

youtube_dlc/extractor/youtube.py

@@ -1366,14 +1366,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     'ext': ext,
                 })
             sub_lang_list[lang] = sub_formats
-        if has_live_chat_replay:
+        """ if has_live_chat_replay:
             sub_lang_list['live_chat'] = [
                 {
                     'video_id': video_id,
                     'ext': 'json',
                     'protocol': 'youtube_live_chat_replay',
                 },
-            ]
+            ] """
         if not sub_lang_list:
             self._downloader.report_warning('video doesn\'t have subtitles')
             return {}