feat(ci): remove py format checking

.github/workflows/ci.yml

@@ -19,40 +19,9 @@ jobs:
           yarn add @commitlint/config-conventional @commitlint/cli
           yarn commitlint --from ${{ github.event.pull_request.base.sha }} --to HEAD
 
-  check-format:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2.3.1
-        with:
-          fetch-depth: 0
-      - name: Set up Python
-        if: ${{ github.event.pull_request }}
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.6
-      - name: Cache pip
-        if: ${{ github.event.pull_request }}
-        uses: actions/cache@v2
-        with:
-          # This path is specific to Ubuntu
-          path: ~/.cache/pip
-          # Look to see if there is a cache hit for the corresponding requirements file
-          key: ${{ runner.os }}-pip-${{ hashFiles('requires.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-pip-
-            ${{ runner.os }}-
-      - name: Install dependencies
-        if: ${{ github.event.pull_request }}
-        run: |
-          python -m pip install --upgrade pip
-      - name: Check format
-        if: ${{ github.event.pull_request }}
-        run: |
-          ./ci/run_format_check.sh
-
   cpu-test:
     runs-on: self-hosted
-    needs: [check-commit, check-format]
+    needs: [check-commit]
     container:
       image: localhost:5000/megengine-ci:latest
     steps:
@@ -75,7 +44,7 @@ jobs:
         run: ./ci/run_cpp_test.sh cpu
   gpu-test:
     runs-on: self-hosted
-    needs: [check-commit, check-format]
+    needs: [check-commit]
     container:
       image: localhost:5000/megengine-ci:latest
       volumes: