build: remove redundant Python setup in test workflow (#157)

Author: he-james

.github/workflows/test.yml

@@ -22,19 +22,15 @@ jobs:
         os:
           - ubuntu-22.04
     steps:
-      - name: Setup python for tox
-        uses: actions/setup-python@v4
-        with:
-          python-version: ${{ matrix.py }}
-      - name: Install tox
-        run: python -m pip install tox
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Setup python for test ${{ matrix.py }}
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.py }}
+      - name: Install tox
+        run: python -m pip install tox
       - name: Setup test suite
         run: |
           sudo apt-get update && sudo apt-get install -y portaudio19-dev