pip をダウングレードする以外の変更を削除

.github/workflows/build.yml

@@ -49,12 +49,6 @@ jobs:
     timeout-minutes: 60
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "${{ matrix.python_version }}"
-          cache: "pip"
-      - run: python -m pip install setuptools wheel
-      - run: python -m pip install -r requirements-dev.lock
       - run: |
           sudo apt-get update
           sudo apt-get -y install libva-dev libdrm-dev
@@ -132,11 +126,9 @@ jobs:
         with:
           python-version: "${{ matrix.python_version }}"
           cache: "pip"
-      - run: python -m pip install pip==23.3.2
-      - run: python -m pip --version
+      - run: pip install pip==23.3.2
       - run: pip --version
-      - run: python -m pip install setuptools wheel
-      - run: python -m pip install -r requirements-dev.lock
+      - run: pip install -r requirements-dev.lock
       - run: python run.py
       - run: python -m build