Replace non-working black-check-multi-python job.

.github/workflows/black_multi_python.yml

@@ -6,26 +6,6 @@ on: [push, pull_request]
 
 jobs:
   black-check-multi-python:
-     runs-on: ubuntu-latest
-     strategy:
-       fail-fast: false
-       matrix:
-         python-version: ["3.7.9", "3.8", "3.9", "3.10", "3.11", "3.12"]
-     steps:
-     - uses: actions/checkout@v4
-     - name: Set up Python ${{ matrix.python-version }}
-       uses: actions/setup-python@v3
-       with:
-         python-version: ${{ matrix.python-version }}
-     - name: Install dependencies
-       run: |
-         python -m pip install --upgrade pip
-         pip install black
-     - name: Analysing the code with black
-       run: |
-         cd python
-         black --check --diff --config pyproject.toml ../cime_config/SystemTests ../cime_config/buildlib ../cime_config/buildnml
-  black-check-multi-python-2:
      runs-on: ubuntu-latest
      strategy:
        fail-fast: false