FIXUP: remove check-doc from the CI, it's part of the main workflow

.github/workflows/check-doc.yml

@@ -1,26 +0,0 @@
-name: Check doc
-
-on:
-  push:
-    branches: [ 'master', 'stable-*' ]
-  pull_request:
-    branches: [ 'master', 'stable-*' ]
-
-jobs:
-
-  test_doc:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.11"
-        cache: 'pip'
-        cache-dependency-path: '**/pyproject.toml'
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install tox
-    - name: Check we can generate documentation
-      run: tox -e docs