docs: dont document root init (#28592)

Author: Erick Friis

docs/api_reference/conf.py

@@ -94,6 +94,9 @@ def skip_private_members(app, what, name, obj, skip, options):
         return True
     if hasattr(obj, '__doc__') and obj.__doc__ and ':private:' in obj.__doc__:
         return True
+    if name == '__init__' and obj.__objclass__ is object:
+        # dont document default init
+        return True
     return None