fix(examples): remove invalid delay from stupid_todolist mutations

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: mpyw

examples/stupid_todolist/config.yaml

@@ -67,7 +67,6 @@ mutations:
     sql: |
       INSERT INTO todos (title) VALUES (:title)
       RETURNING id, title, completed, created_at
-    delay: 500ms
     transform:
       post: |
         response.status = 201;
@@ -80,7 +79,6 @@ mutations:
     sql: |
       UPDATE todos SET title = :title, completed = :completed WHERE id = :id
       RETURNING id, title, completed, created_at
-    delay: 500ms
     transform:
       pre: |
         return {
@@ -95,7 +93,6 @@ mutations:
     method: DELETE
     path: /api/todos/{id:[0-9]+}
     sql: DELETE FROM todos WHERE id = :id
-    delay: 500ms
     transform:
       post: |
         response.status = 204;