We do not need to check docs for this project.

--- btrees-6.3/tox.ini.orig
+++ btrees-6.3/tox.ini
@@ -21,7 +21,6 @@
 pip_pre = py315: true
 deps =
     setuptools >= 78.1.1,< 81
-    Sphinx
 setenv =
     pure: PURE_PYTHON=1
     !pure-!pypy3: PURE_PYTHON=0
@@ -31,10 +30,8 @@
     ZOPE_INTERFACE_LOG_CHANGED_IRO=1
 commands =
     zope-testrunner --test-path=src {posargs:-vc}
-    sphinx-build -b doctest -d {envdir}/.cache/doctrees docs {envdir}/.cache/doctest
 extras =
     test
-    docs
 
 [testenv:w_zodb]
 basepython = python3.13