[cleanup] Mark broken and remove dead extractors (#9238)

Authored by: seproDev

yt_dlp/extractor/nextmedia.py

@@ -191,6 +191,8 @@ class AppleDailyIE(NextMediaIE):  # XXX: Do not subclass from concrete IE
 
 
 class NextTVIE(InfoExtractor):
+    _WORKING = False
+    _ENABLED = None  # XXX: pass through to GenericIE
     IE_DESC = '壹電視'
     _VALID_URL = r'https?://(?:www\.)?nexttv\.com\.tw/(?:[^/]+/)+(?P<id>\d+)'