Remove 3.5 from Doc version switcher in master. (#22886)

diff --git a/Doc/tools/static/switchers.js b/Doc/tools/static/switchers.js
index c51f178..1a1c7d0 100644
--- a/Doc/tools/static/switchers.js
+++ b/Doc/tools/static/switchers.js
@@ -15,7 +15,6 @@
     '3.8': '3.8',
     '3.7': '3.7',
     '3.6': '3.6',
-    '3.5': '3.5',
     '2.7': '2.7',
   };
 
diff --git a/Doc/tools/templates/indexsidebar.html b/Doc/tools/templates/indexsidebar.html
index 7a40be7..1c1cb54 100644
--- a/Doc/tools/templates/indexsidebar.html
+++ b/Doc/tools/templates/indexsidebar.html
@@ -7,7 +7,6 @@
   <li><a href="https://docs.python.org/3.8/">{% trans %}Python 3.8 (stable){% endtrans %}</a></li>
   <li><a href="https://docs.python.org/3.7/">{% trans %}Python 3.7 (stable){% endtrans %}</a></li>
   <li><a href="https://docs.python.org/3.6/">{% trans %}Python 3.6 (security-fixes){% endtrans %}</a></li>
-  <li><a href="https://docs.python.org/3.5/">{% trans %}Python 3.5 (security-fixes){% endtrans %}</a></li>
   <li><a href="https://docs.python.org/2.7/">{% trans %}Python 2.7 (EOL){% endtrans %}</a></li>
   <li><a href="https://www.python.org/doc/versions/">{% trans %}All versions{% endtrans %}</a></li>
 </ul>