diff --git a/neutron/tests/unit/extensions/base.py b/neutron/tests/unit/extensions/base.py
index ce83f56c129..e4a67dca0ae 100644
--- a/neutron/tests/unit/extensions/base.py
+++ b/neutron/tests/unit/extensions/base.py
@@ -36,24 +36,6 @@ CORE_PLUGIN = 'neutron.db.db_base_plugin_v2.NeutronDbPluginV2'
 
 class ExtensionTestCase(testlib_api.WebTestCase):
 
-    # TODO(boden): remove once all consumers use _setup_extension
-    def _setUpExtension(self, plugin, service_type,
-                        _resource_attribute_map,
-                        extension_class,
-                        resource_prefix, plural_mappings=None,
-                        translate_resource_name=False,
-                        allow_pagination=False, allow_sorting=False,
-                        supported_extension_aliases=None,
-                        use_quota=False):
-        return self.setup_extension(
-            plugin, service_type,
-            extension_class,
-            resource_prefix, plural_mappings,
-            translate_resource_name,
-            allow_pagination, allow_sorting,
-            supported_extension_aliases,
-            use_quota)
-
     def setup_extension(self, plugin, service_type,
                         extension_class,
                         resource_prefix, plural_mappings=None,