[gameinformer] remove unused imports

youtube_dl/extractor/gameinformer.py

@@ -2,8 +2,6 @@
 from __future__ import unicode_literals
 
 from .common import InfoExtractor
-from ..compat import compat_str
-from ..utils import int_or_none
 
 
 class GameInformerIE(InfoExtractor):