[curiositystream] don't cache auth token

youtube_dl/extractor/curiositystream.py

@@ -33,10 +33,6 @@ class CuriosityStreamBaseIE(InfoExtractor):
         return result['data']
 
     def _real_initialize(self):
-        if not self._auth_token:
-            user = self._downloader.cache.load('curiositystream', 'user') or {}
-            self._auth_token = user.get('auth_token')
-            if not self._auth_token:
         (email, password) = self._get_login_info()
         if email is None:
             return
@@ -47,10 +43,6 @@ class CuriosityStreamBaseIE(InfoExtractor):
             }))
         self._handle_errors(result)
         self._auth_token = result['message']['auth_token']
-                self._downloader.cache.store(
-                    'curiositystream', 'user', {
-                        'auth_token': self._auth_token,
-                    })
 
     def _extract_media_info(self, media):
         video_id = compat_str(media['id'])