tweak windows ci

Author: dromer

.github/workflows/build.yml

@@ -78,10 +78,6 @@ jobs:
        with:
          submodules: recursive
 
-     - uses: actions/setup-python@v5
-       with:
-         python-version: '3.10'
-
      - if: runner.os == 'Windows'
        name: "Install mingw deps"
        uses: msys2/setup-msys2@v2