fixed yaml syntax error

.github/workflows/gh-ci.yaml

@@ -23,30 +23,13 @@ defaults:
     shell: bash  -l {0} 
 
 jobs:
-#  environment-config:
-#    runs-on: ubuntu-latest
-#    outputs:
-#      stable-python-version: ${{ steps.get-compatible-python.outputs.stable-python }}
-#      python-matrix: ${{ steps.get-compatible-python.outputs.python-versions }}
-#    steps:
-#      - uses: actions/setup-python@v5.3.0
-#        with:
-#          python-version: "3.13"
-#
-#      - id: get-compatible-python
-#        uses: MDAnalysis/mdanalysis-compatible-python@main
-#        with:
-#          release: "latest"
-#
   main-tests:
     if: "github.repository == 'becksteinlab/basicrta'"
-#    needs: environment-config
     runs-on: ${{ matrix.os }}
     strategy:
         fail-fast: false
         matrix:
           os: [macOS-latest, ubuntu-latest, windows-latest]
-#          python-version: ${{ fromJSON(needs.environment-config.outputs.python-matrix) }}
           python-version: ["3.10", "3.11", "3.12"]
           mdanalysis-version: ["latest", "develop"]
           exclude: