diff --git a/youtube_dl/extractor/dailymotion.py b/youtube_dl/extractor/dailymotion.py
index 7ed7f27236..5504d93ebf 100644
--- a/youtube_dl/extractor/dailymotion.py
+++ b/youtube_dl/extractor/dailymotion.py
@@ -8,7 +8,6 @@ from .subtitles import SubtitlesInfoExtractor
 from ..utils import (
     compat_urllib_request,
     compat_str,
-    get_element_by_attribute,
     get_element_by_id,
     orderedSet,
     str_to_int,
diff --git a/youtube_dl/extractor/morningstar.py b/youtube_dl/extractor/morningstar.py
index 3d3225699b..4f7a5d2e4a 100644
--- a/youtube_dl/extractor/morningstar.py
+++ b/youtube_dl/extractor/morningstar.py
@@ -1,17 +1,9 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
-import hashlib
-import json
 import re
-import time
 
 from .common import InfoExtractor
-from ..utils import (
-    compat_parse_qs,
-    compat_str,
-    int_or_none,
-)
 
 
 class MorningstarIE(InfoExtractor):
diff --git a/youtube_dl/extractor/yahoo.py b/youtube_dl/extractor/yahoo.py
index f51bdb9651..c1de172b16 100644
--- a/youtube_dl/extractor/yahoo.py
+++ b/youtube_dl/extractor/yahoo.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 
 import itertools
+import json
 import re
 
 from .common import InfoExtractor, SearchInfoExtractor