Plugin cleanup and tweaks

plugins/youtube_download/yt_dlp/extractor/leeco.py

@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 import datetime
 import hashlib
 import re
@@ -185,7 +182,6 @@ class LeIE(InfoExtractor):
                     f['height'] = int_or_none(format_id[:-1])
 
                 formats.append(f)
-        self._sort_formats(formats, ('res', 'quality'))
 
         publish_time = parse_iso8601(self._html_search_regex(
             r'发布时间&nbsp;([^<>]+) ', page, 'publish time', default=None),
@@ -199,6 +195,7 @@ class LeIE(InfoExtractor):
             'thumbnail': playurl['pic'],
             'description': description,
             'timestamp': publish_time,
+            '_format_sort_fields': ('res', 'quality'),
         }
 
 
@@ -359,7 +356,6 @@ class LetvCloudIE(InfoExtractor):
         media_id = uu + '_' + vu
 
         formats = self._get_formats('flash', uu, vu, media_id) + self._get_formats('html5', uu, vu, media_id)
-        self._sort_formats(formats)
 
         return {
             'id': media_id,