Remove unnecessary Github Actions' job

Author: Leonardo Rossi

.github/workflows/tox-test.yml

@@ -3,22 +3,6 @@ name: Tox tests
 on: [push, pull_request]
 
 jobs:
-  py38:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Update existing dependencies
-        run: sudo apt-get update -y
-      - name: Install system dependencies
-        run: sudo apt-get install -y libkrb5-dev
-      - name: Setup Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.8
-      - name: Install tox
-        run: pip install tox
-      - name: Run tox
-        run: tox -e py38
   static:
     runs-on: ubuntu-latest
     steps: