diff -ur seaborn-0.11.0/setup.py seaborn-0.11.0.ext/setup.py
--- seaborn-0.11.0/setup.py	2020-09-08 16:24:09.000000000 +0200
+++ seaborn-0.11.0.ext/setup.py	2020-11-27 18:08:31.203023812 +0100
@@ -40,7 +40,6 @@
 PACKAGES = [
     'seaborn',
     'seaborn.colors',
-    'seaborn.external',
     'seaborn.tests',
 ]