Remove the temporary testing workflow

.github/workflows/test-changelog.yaml

@@ -1,49 +0,0 @@
-name: Temporarily test changelog formatting
-on:
-  pull_request:
-
-jobs:
-  build:
-    name: Get changelog
-    runs-on: ubuntu-latest
-    outputs:
-      changelog: ${{ steps.generate_changelog.outputs.changelog }}
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install Python tools
-        uses: BrandonLWhite/pipx-install-action@v0.1.1
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.9"
-          cache: poetry
-
-      - name: Install dependencies
-        run: poetry install --with=release --extras=docs
-
-      - name: Install pandoc
-        run: sudo apt update && sudo apt install pandoc -y
-
-      - name: Obtain the changelog
-        id: generate_changelog
-        run: |
-          {
-            echo 'changelog<<EOF'
-            poe --quiet changelog
-            echo EOF
-          } >> "$GITHUB_OUTPUT"
-  test:
-    runs-on: ubuntu-latest
-    permissions:
-      pull-requests: write
-    needs: build
-    env:
-      CHANGELOG: ${{ needs.build.outputs.changelog }}
-    steps:
-      - uses: mshick/add-pr-comment@v2
-        with:
-          message: |-
-            ### Commit: ${{ github.sha }}
-            ### Changelog:
-
-            ${{ env.CHANGELOG }}