Replace python validation

.flake8

@@ -1,3 +0,0 @@
-[flake8]
-max-line-length = 200
-ignore = F401  # To do: remove this before v4.4

.github/workflows/validate_python.yml

@@ -12,22 +12,19 @@ on:
   workflow_dispatch:
 
 jobs:
-  flake8_py3:
+  flake8-lint:
     runs-on: ubuntu-latest
+    name: Lint
     steps:
-      - name: Setup Python
+      - name: Check out source repository
-        uses: actions/setup-python@v1
+        uses: actions/checkout@v3
+      - name: Set up Python environment
+        uses: actions/setup-python@v4
         with:
-          python-version: 3.7.17
+          python-version: "3.11"
-          architecture: x64
+      - name: flake8 Lint
-      - name: Checkout PyTorch
+        uses: py-actions/flake8@v2
-        uses: actions/checkout@main
-      - name: Install flake8
-        run: pip install flake8
-      - name: Run flake8
-        uses: suo/flake8-github-action@releases/v1
         with:
-          checkName: 'flake8_py3'   # NOTE: this needs to be the same as the job name
+          ignore: "F401"
-        env:
+          max-line-length: "200"
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 ...