remove unused imports

youtube_dl/compat.py

@@ -306,7 +306,7 @@ def workaround_optparse_bug9161():
     og = optparse.OptionGroup(op, 'foo')
     try:
         og.add_option('-t')
-    except TypeError as te:
+    except TypeError:
         real_add_option = optparse.OptionGroup.add_option
 
         def _compat_add_option(self, *args, **kwargs):

youtube_dl/extractor/arte.py

@@ -5,7 +5,6 @@
 
 from .common import InfoExtractor
 from ..utils import (
-    ExtractorError,
     find_xpath_attr,
     unified_strdate,
     get_element_by_id,

youtube_dl/extractor/comedycentral.py

@@ -2,7 +2,6 @@
 
 import re
 
-from .common import InfoExtractor
 from .mtv import MTVServicesInfoExtractor
 from ..utils import (
     compat_str,

youtube_dl/extractor/goldenmoustache.py

@@ -1,9 +1,7 @@
 from __future__ import unicode_literals
 
-import re
 from .common import InfoExtractor
 from ..utils import (
-    parse_duration,
     int_or_none,
 )