Remove _sort_formats from _extract_*_formats methods

Now _sort_formats should be called explicitly.
_sort_formats has been added to all the necessary places in code.

Closes #8051

youtube_dl/extractor/rtvnh.py

@@ -38,6 +38,7 @@ class RTVNHIE(InfoExtractor):
                     item['file'], video_id, ext='mp4', entry_protocol='m3u8_native'))
             elif item.get('type') == '':
                 formats.append({'url': item['file']})
+        self._sort_formats(formats)
 
         return {
             'id': video_id,