Fix: Delete unused pages (#6973)

### What problem does this PR solve?

Fix: Delete unused pages

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/api/index.tsx

-import ApiContent from '@/components/api-service/chat-overview-modal/api-content';
-
-const ApiPage = () => {
-  return (
-    <div>
-      <ApiContent idKey="dialogId"></ApiContent>
-    </div>
-  );
-};
-
-export default ApiPage;