Fix incomplete cleanup in autodoc_enhancements.py

Author: AA-Turner

sphinx_automodapi/autodoc_enhancements.py

@@ -3,13 +3,8 @@
 """
 import dataclasses
 
-from sphinx.ext.autodoc import AttributeDocumenter
-
 __all__ = []
 
-class_types = (type,)
-MethodDescriptorType = type(type.__subclasses__)
-
 
 # See
 # https://github.com/astropy/astropy-helpers/issues/116#issuecomment-71254836
@@ -71,18 +66,7 @@ def type_object_attrgetter(obj, attr, *defargs):
 
 
 def setup(app):
-    # Must have the autodoc extension set up first so we can override it
-    app.setup_extension('sphinx.ext.autodoc')
-
     app.add_autodoc_attrgetter(type, type_object_attrgetter)
 
-    suppress_warnings_orig = app.config.suppress_warnings[:]
-    if 'app.add_directive' not in app.config.suppress_warnings:
-        app.config.suppress_warnings.append('app.add_directive')
-    try:
-        app.add_autodocumenter(AttributeDocumenter)
-    finally:
-        app.config.suppress_warnings = suppress_warnings_orig
-
     return {'parallel_read_safe': True,
             'parallel_write_safe': True}