ci: Remove CI-managed prerelease in favor of manual release

.github/workflows/release.yml

@@ -1,9 +1,6 @@
 name: Release package
 
 on:
-  push: # On push to these prerelease branches
-    branches:
-      - v2
   release: # On create a GitHub Release
     types:
       - created
@@ -17,7 +14,6 @@ jobs:
         url: https://pypi.org/p/asdf-pydantic/
     permissions:
       id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
-      contents: write  # For writing to GitHub release
 
     steps:
     - uses: actions/checkout@v3
@@ -29,16 +25,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install hatch
-        echo "ASDF_PYDANTIC_VERSION=$(hatch version | sed 's/+g.*$//g')" >> $GITHUB_ENV
     - name: Build
       run: hatch build
-    - name: Create GitHub Release (prerelease only)
-      if: startsWith(github.ref, 'refs/heads/v2')
-      uses: softprops/action-gh-release@v1
-      with:
-        prerelease: true
-        tag_name: ${{ env.ASDF_PYDANTIC_VERSION }}
-        files: dist/*
-        generate_release_notes: true
     - name: Publish package distributions to PyPI
       uses: pypa/gh-action-pypi-publish@release/v1