docs(changelog): remove duplicate Unreleased section with duplicate Packaging heading

This fixes MD024/no-duplicate-heading in the markdownlint CI check.

Author: ulises-jeremias

CHANGELOG.md

@@ -6,12 +6,6 @@
 
 - Add PyPI `keywords` and Trove `classifiers` to `create-awesome-python-app` and `create-python-app-core` `pyproject.toml` so the packages are discoverable on PyPI by scaffold/fastapi/django/celery/typer/uv/cli themes and filtered by Python version, license, and topic (#246).
 
-## Unreleased
-
-### Packaging
-
-- Add PyPI `keywords` and Trove `classifiers` to `create-awesome-python-app` and `create-python-app-core` `pyproject.toml` so the packages are discoverable on PyPI by scaffold/fastapi/django/celery/typer/uv/cli themes and filtered by Python version, license, and topic (#246).
-
 ## 0.2.11 - 2026-07-23
 
 ### CLI / argv after template URL