docs: remove deprecated AI features from React guide (#2019)

SD-1882

Author: caio-pizzol

apps/docs/getting-started/frameworks/react.mdx

@@ -405,20 +405,6 @@ function CollaborativeEditor() {
 </Card>
 </CardGroup>
 
-### AI Features
-
-```jsx
-<SuperDocEditor
-  document={file}
-  modules={{
-    ai: {
-      apiKey: 'your-api-key',
-      endpoint: 'https://api.example.com/ai',
-    },
-  }}
-/>
-```
-
 ### Search and Navigate
 
 ```jsx