diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 7c8e42ed4..e3bd07155 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -450,10 +450,7 @@ from .hrti import (
 from .huajiao import HuajiaoIE
 from .huffpost import HuffPostIE
 from .hypem import HypemIE
-from .ibm_think import (
-    IbmThinkIE,
-    IbmThinkPlaylistIE,
-)
+from .ibm_think import IbmThinkPlaylistIE
 from .iconosquare import IconosquareIE
 from .ign import (
     IGNIE,
@@ -1336,7 +1333,7 @@ from .webofstories import (
     WebOfStoriesPlaylistIE,
 )
 from .weibo import (
-    WeiboIE, 
+    WeiboIE,
     WeiboMobileIE
 )
 from .weiqitv import WeiqiTVIE
diff --git a/youtube_dl/extractor/ibm_think.py b/youtube_dl/extractor/ibm_think.py
index 7589cb856..4541c78ae 100644
--- a/youtube_dl/extractor/ibm_think.py
+++ b/youtube_dl/extractor/ibm_think.py
@@ -7,31 +7,6 @@ from .common import InfoExtractor
 from .generic import GenericIE
 
 
-class IbmThinkIE(InfoExtractor):
-    IE_DESC = 'IBM Think Videos'
-    IE_NAME = 'IBMThink'
-    _VALID_URL = r'https?://(?:www\.)?ibm\.com/events/think/watch/(playlist/)?(\d*/)?replay/(?P<id>[0-9]+)/?'
-    _TESTS = [{
-        'url': 'https://www.ibm.com/events/think/watch/replay/113734399/',
-        'md5': '0a3f1c81c58aacbbb36e292a1c1f9690',
-        'info_dict': {
-            'id': '113734399',
-            'ext': 'mp4',
-            'title': 'Think 2018 Chairman\'s Address: Putting Smart to Work',
-            'timestamp': 1521575552,
-            'upload_date': '20180320',
-            'uploader': 'f8k4md3yana',
-            'uploader_id': '43178333',
-        }
-    }]
-
-    def _real_extract(self, url):
-        video_id = self._match_id(url)
-        webpage = self._download_webpage(url, video_id)
-        ustream_url = self._html_search_regex(r'<iframe\ssrc="(.*?)"', webpage, 'ustream_url').split('?')[0] + '/'
-        return self.url_result(ustream_url, GenericIE.ie_key())
-
-
 class IbmThinkPlaylistIE(InfoExtractor):
     IE_DESC = 'IBM Think Playlist'
     IE_NAME = 'IBMThink:playlist'