Plugin cleanup and tweaks

plugins/youtube_download/yt_dlp/extractor/thisav.py

@@ -1,7 +1,3 @@
-# coding: utf-8
-from __future__ import unicode_literals
-
-
 from .common import InfoExtractor
 from ..utils import remove_end
 
@@ -37,9 +33,7 @@ class ThisAVIE(InfoExtractor):
 
         video_id = mobj.group('id')
         webpage = self._download_webpage(url, video_id)
-        title = remove_end(self._html_search_regex(
-            r'<title>([^<]+)</title>', webpage, 'title'),
-            ' - 視頻 - ThisAV.com-世界第一中文成人娛樂網站')
+        title = remove_end(self._html_extract_title(webpage), ' - 視頻 - ThisAV.com-世界第一中文成人娛樂網站')
         video_url = self._html_search_regex(
             r"addVariable\('file','([^']+)'\);", webpage, 'video url', default=None)
         if video_url: