chore: remove auth legacy tables (#422)

* chore: remove unused tables and their permissions from metadata configuration

* chore: remove legacy user object relationship from metadata configuration

Author: clostao

hasura/metadata/databases/default/tables/api_keys.yaml

@@ -25,13 +25,3 @@ object_relationships:
         remote_table:
           name: metadata
       schema: public
-  - name: user
-    using:
-      manual_configuration:
-        column_mapping:
-          oauth_provider: oauth_provider
-          oauth_user_id: oauth_user_id
-        insertion_order: null
-        remote_table:
-          name: users
-          schema: public

hasura/metadata/databases/default/tables/object_ownership.yaml

@@ -1,12 +1,8 @@
 - "!include metadata.yaml"
 - "!include nodes.yaml"
 - "!include object_ownership.yaml"
-- "!include api_keys.yaml"
 - "!include interactions.yaml"
-- "!include organizations.yaml"
 - "!include subscriptions.yaml"
-- "!include users.yaml"
-- "!include users_organizations.yaml"
 - "!include published_objects.yaml"
 - "!include root_metadata.yaml"
 - "!include async_downloads.yaml"