Delete .github/workflows directory

.github/workflows/build.yml

@@ -1,27 +0,0 @@
-name: CI
-on:
-  push:
-  pull_request:
-  schedule:
-    - cron: '0 8 * * 6'
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python: ["2.7", "pypy2", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "pypy3"]
-    name: "Test: Python ${{ matrix.python }}"
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: recursive
-      - uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python }}
-      - run: ./test/test
-  fmt:
-    name: Format
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: psf/black@stable