chore: remove duplicate changelog entries from 0.9.0 release

Author: DaleSeo

CHANGELOG.md

@@ -118,10 +118,6 @@ telemetry:
         - request_id
 ```
 
-### Configuration for disabling authorization token passthrough - @swcollard PR #336
-
-A new optional new MCP Server configuration parameter, `transport.auth.disable_auth_token_passthrough`, which is `false` by default, that when true, will no longer pass through validated Auth tokens to the GraphQL API.
-
 ### Adding config option for trace sampling - @alocay PR #366
 
 Adding configuration option to sample traces. Can use the following options:
@@ -162,26 +158,10 @@ We've been seeing errors with state and session handling in the MCP Server. Whet
 
 ## 🛠 Maintenance
 
-### Update RMCP dependency - @nicholascioli PR #328
-
-Update the RMCP dependency to the latest version, pulling in newer specification changes.
-
-### Pin stable rust version - @nicholascioli PR #287
-
-Pins the stable version of Rust to the current latest version to ensure backwards compatibility with future versions.
-
 ### Add tests for server event and SupergraphSdlQuery - @DaleSeo PR #347
 
 This PR adds tests for some uncovered parts of the codebase to check the Codecov integration.
 
-### Configure Codecov with coverage targets - @DaleSeo PR #337
-
-This PR adds `codecov.yml` to set up Codecov with specific coverage targets and quality standards. It helps define clear expectations for code quality. It also includes some documentation about code coverage in `CONTRIBUTING.md` and adds the Codecov badge to `README.md`.
-
-### Implement Test Coverage Measurement and Reporting - @DaleSeo PR #335
-
-This PR adds the bare minimum for code coverage reporting using [cargo-llvm-cov](https://crates.io/crates/cargo-llvm-cov) and integrates with [Codecov](https://www.codecov.io/). It adds a new `coverage` job to the CI workflow that generates and uploads coverage reporting in parallel with existing tests. The setup mirrors that of Router, except it uses `nextest` instead of the built-in test runner and CircleCI instead of GitHub Actions.
-
 ### Fix version on mcp server tester - @alocay PR #374
 
 Add a specific version when calling the mcp-server-tester for e2e tests. The current latest (1.4.1) as an issue so to avoid problems now and in the future updating the test script to invoke the testing tool via specific version.