Hopefully fix PyPI release CI

Author: kneasle

.github/workflows/publish-to-pypi.yml

@@ -14,10 +14,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python
-      uses: actions/setup-python@v2
-      with:
-        python-version: '3.x'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip