chore: drop duplicate merge-commit entries from the changelog

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Wsrcg329GKJTyK1eWqMxb

Author: viniciusdsmello

CHANGELOG.md

@@ -10,14 +10,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Features
 
-* **OPEN-12792:** add Azure AI Speech tracer ([44f048e](https://github.com/openlayer-ai/openlayer-python/commit/44f048eaf7271d19faeb10d3248ae1fee944a1d7))
 * **OPEN-12792:** add Azure AI Speech tracer ([01855ab](https://github.com/openlayer-ai/openlayer-python/commit/01855abd0ccc21828a97886ce2a4cf49f8b95721))
 
 
 ### Bug Fixes
 
 * **OPEN-12792:** attach Speech audio in the shape the Openlayer UI renders ([33bbc5c](https://github.com/openlayer-ai/openlayer-python/commit/33bbc5cd0f33f8e7fb844a610ae66b98e5acc84a))
-* **OPEN-12792:** redact credentials from Azure Speech errors; label audio by its real encoding ([44acff9](https://github.com/openlayer-ai/openlayer-python/commit/44acff95e173be55defbda05e6199f43a2172f98))
 * **OPEN-12792:** redact credentials from Speech errors; label audio by its real encoding ([4e41a62](https://github.com/openlayer-ai/openlayer-python/commit/4e41a6279434ea26e3c05555ae382d26a6cbb2a0))
 * **OPEN-12792:** use a space-free provider name for Azure Speech steps ([f909d6c](https://github.com/openlayer-ai/openlayer-python/commit/f909d6c7245d10063d76477b6809dbd93798b751))