diff --git a/doc/source/conf.py b/doc/source/conf.py
index 05b2c75f2e1b..57f71026b150 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -162,9 +162,6 @@ def setup(app):
     "navigation_depth": 2,
 }
 
-# Add any paths that contain custom themes here, relative to this directory.
-# html_theme_path = []
-
 # The name for this set of Sphinx documents.  If None, it defaults to
 # "<project> v<release> documentation".
 # html_title = None