Remove autodoc for standalone.authenticator
diff --git a/docs/api/plugins/standalone.rst b/docs/api/plugins/standalone.rst
index 99e5ea2f869..f5b9d9c2450 100644
--- a/docs/api/plugins/standalone.rst
+++ b/docs/api/plugins/standalone.rst
@@ -3,9 +3,3 @@
 
 .. automodule:: letsencrypt.plugins.standalone
    :members:
-
-:mod:`letsencrypt.plugins.standalone.authenticator`
-===================================================
-
-.. automodule:: letsencrypt.plugins.standalone.authenticator
-   :members:

This cause errors in doc generation.
