Plugin cleanup and tweaks

plugins/youtube_download/yt_dlp/extractor/hketv.py

@@ -1,6 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
 from .common import InfoExtractor
 from ..compat import compat_str
 from ..utils import (
@@ -140,7 +137,6 @@ class HKETVIE(InfoExtractor):
                 'width': w,
                 'height': h,
             })
-        self._sort_formats(formats)
 
         subtitles = {}
         tracks = try_get(playlist0, lambda x: x['tracks'], list) or []