Changes for CI tests

Author: joachimmetz

.github/workflows/test_tox.yml

@@ -14,8 +14,6 @@ jobs:
     strategy:
       matrix:
         include:
-        - python-version: '3.8'
-          toxenv: 'py38,wheel'
         - python-version: '3.9'
           toxenv: 'py39,wheel'
         - python-version: '3.10'