diff --git a/doc/training-guides/associate-guide/conf.py b/doc/training-guides/associate-guide/conf.py
index 2a67079c..9946ddf5 100644
--- a/doc/training-guides/associate-guide/conf.py
+++ b/doc/training-guides/associate-guide/conf.py
@@ -37,11 +37,6 @@ import os
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.doctest',
-    'sphinx.ext.todo',
-    'sphinx.ext.coverage',
-    'sphinx.ext.pngmath',
-    'sphinx.ext.ifconfig',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
diff --git a/doc/upstream-training/source/conf.py b/doc/upstream-training/source/conf.py
index a61ea22f..50d7abc0 100644
--- a/doc/upstream-training/source/conf.py
+++ b/doc/upstream-training/source/conf.py
@@ -37,11 +37,6 @@ import os
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.doctest',
-    'sphinx.ext.todo',
-    'sphinx.ext.coverage',
-    'sphinx.ext.pngmath',
-    'sphinx.ext.ifconfig',
 ]
 
 # Add any paths that contain templates here, relative to this directory.