Remove Python 2.7 from CI as virtualenv desupported it

Author: pfmoore

.github/workflows/check.yml

@@ -28,9 +28,6 @@ jobs:
     - run: pip install nox
 
     # Install supported Python versions
-    - uses: actions/setup-python@v4
-      with:
-        python-version: 2.7
     - uses: actions/setup-python@v4
       with:
         python-version: 3.7