Remove unused imports

youtube_dl/extractor/defense.py

@@ -1,8 +1,5 @@
 from __future__ import unicode_literals
 
-import re
-import json
-
 from .common import InfoExtractor
 
 

youtube_dl/extractor/la7.py

@@ -1,7 +1,5 @@
 from __future__ import unicode_literals
 
-import re
-
 from .common import InfoExtractor
 from ..utils import (
     parse_duration,