diff --git a/youtube_dl/extractor/addanime.py b/youtube_dl/extractor/addanime.py
index 46db8262fe..82a785a19c 100644
--- a/youtube_dl/extractor/addanime.py
+++ b/youtube_dl/extractor/addanime.py
@@ -1,4 +1,3 @@
-import ast
 import re
 
 from .common import InfoExtractor
diff --git a/youtube_dl/extractor/appletrailers.py b/youtube_dl/extractor/appletrailers.py
index b3bdb2955e..8b191c1963 100644
--- a/youtube_dl/extractor/appletrailers.py
+++ b/youtube_dl/extractor/appletrailers.py
@@ -4,7 +4,6 @@ import xml.etree.ElementTree
 from .common import InfoExtractor
 from ..utils import (
     determine_ext,
-    ExtractorError,
 )
 
 
diff --git a/youtube_dl/extractor/trilulilu.py b/youtube_dl/extractor/trilulilu.py
index 1c46156c7c..f278951baf 100644
--- a/youtube_dl/extractor/trilulilu.py
+++ b/youtube_dl/extractor/trilulilu.py
@@ -3,9 +3,6 @@ import re
 import xml.etree.ElementTree
 
 from .common import InfoExtractor
-from ..utils import (
-    ExtractorError,
-)
 
 
 class TriluliluIE(InfoExtractor):
diff --git a/youtube_dl/extractor/wat.py b/youtube_dl/extractor/wat.py
index 7d228edac1..29c25f0e30 100644
--- a/youtube_dl/extractor/wat.py
+++ b/youtube_dl/extractor/wat.py
@@ -6,7 +6,6 @@ import re
 from .common import InfoExtractor
 
 from ..utils import (
-    compat_urllib_parse,
     unified_strdate,
 )