We do not need to check docs for this project.

--- zope_interface-8.6/tox.ini.orig
+++ zope_interface-8.6/tox.ini
@@ -30,10 +30,8 @@
 commands =
     pip install -U -e .[test]
     coverage run -p -m unittest discover -s src/zope {posargs}
-    sphinx-build -b doctest -d {envdir}/.cache/doctrees docs {envdir}/.cache/doctest
 extras =
     test
-    docs
 
 [testenv:setuptools-latest]
 basepython = python3