[southpark_de] Clean-up coding style

youtube_dl/extractor/southpark.py

@@ -89,6 +89,7 @@ class SouthParkDeIE(MTVServicesInfoExtractor):
             'mgid': uri,
         }
 
+
 class SouthParkDeEnIE(SouthParkIE):
     IE_NAME = 'southpark.de:en'
     _VALID_URL = r'https?://(?:www\.)?(?P<url>southpark\.de/en/(?:video-clips|episodes|collections)/(?P<id>.+?)(\?|#|$))'
@@ -124,6 +125,7 @@ class SouthParkDeEnIE(SouthParkIE):
             'mgid': uri,
         }
 
+
 class SouthParkNlIE(SouthParkIE):
     IE_NAME = 'southpark.nl'
     _VALID_URL = r'https?://(?:www\.)?(?P<url>southpark\.nl/(?:clips|(?:full-)?episodes|collections)/(?P<id>.+?)(\?|#|$))'