docs: Remove rogue troubleshooting guide (#46495)

## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

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## Summary by CodeRabbit

* **Documentation**
* Streamlined Edge Functions documentation navigation by consolidating
troubleshooting references into a single, comprehensive guide.

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apps/docs/components/Navigation/NavigationMenu/NavigationMenu.constants.ts

@@ -1662,10 +1662,6 @@ export const functions: NavMenuConstant = {
           name: 'Troubleshooting',
           url: '/guides/functions/troubleshooting' as `/${string}`,
         },
-        {
-          name: 'Worker timeouts and WebSocket drops',
-          url: '/troubleshooting/edge-functions-worker-timeouts-and-websocket-drops' as `/${string}`,
-        },
       ],
     },
     {