chore: Update README diagram (#6129)

## Explanation

Recent changes to the profile sync controller were not yet represented
in the diagram in the README.

## References

The diagram changes are due to
#6081

## Changelog

N/A

## Checklist

- [x] I've updated the test suite for new or updated code as appropriate
- [x] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [x] I've communicated my changes to consumers by [updating changelogs
for packages I've
changed](https://github.com/MetaMask/core/tree/main/docs/contributing.md#updating-changelogs),
highlighting breaking changes as necessary
- [x] I've prepared draft pull requests for clients and consumer
packages to resolve any breaking changes

Author: Gudahtt

README.md

@@ -162,7 +162,6 @@ linkStyle default opacity:0.5
   bridge_status_controller --> base_controller;
   bridge_status_controller --> controller_utils;
   bridge_status_controller --> polling_controller;
-  bridge_status_controller --> user_operation_controller;
   bridge_status_controller --> accounts_controller;
   bridge_status_controller --> bridge_controller;
   bridge_status_controller --> gas_fee_controller;
@@ -243,7 +242,6 @@ linkStyle default opacity:0.5
   profile_sync_controller --> base_controller;
   profile_sync_controller --> accounts_controller;
   profile_sync_controller --> keyring_controller;
-  profile_sync_controller --> network_controller;
   rate_limit_controller --> base_controller;
   remote_feature_flag_controller --> base_controller;
   remote_feature_flag_controller --> controller_utils;