ci: don't install python (#8961)

.github/workflows/ci.yml

@@ -87,26 +87,12 @@ jobs:
           curl -fsSL https://deno.land/x/install/install.sh | sh -s v1.5.1
           echo "$HOME/.deno/bin" >> $env:GITHUB_PATH
 
-      - name: Install Python
-        uses: actions/setup-python@v1
-        with:
-          python-version: "2.7"
-          architecture: x64
-
       - name: Install Node
         uses: actions/setup-node@v2
         with:
           node-version: "14"
           check-latest: true
 
-      - name: Remove unused versions of Python
-        if: startsWith(matrix.os, 'windows')
-        run: |-
-          $env:PATH -split ";" |
-            Where-Object { Test-Path "$_\python.exe" } |
-            Select-Object -Skip 1 |
-            ForEach-Object { Move-Item "$_" "$_.disabled" }
-
       - name: Setup gcloud (unix)
         if: |
           runner.os != 'Windows' &&