YoutubePlaylistIE: don't look into entry['content']['src'], accruing to the docs this can return live stream urls

youtube_dl/InfoExtractors.py

@@ -1610,11 +1610,6 @@ class YoutubePlaylistIE(InfoExtractor):
                 index = entry['yt$position']['$t']
                 if 'media$group' in entry and 'media$player' in entry['media$group']:
                     videos.append((index, entry['media$group']['media$player']['url']))
-                # Using this field can cause problems:
-                # https://github.com/rg3/youtube-dl/issues/886
-                elif 'content' in entry:
-                    videos.append((index, entry['content']['src']))
-
 
             if len(response['feed']['entry']) < self._MAX_RESULTS:
                 break