Delete github stuff again

.github/workflows/wheels_cross_64bit.yml

-name: wheels_cross_64bit
-on: [push]
-jobs:
-  build-wheels:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macOS-10.15]
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "recursive"
-      - uses: actions/setup-python@v2
-      - run: python -m pip install --user --upgrade cibuildwheel
-      - run: python -m cibuildwheel --output-dir wheelhouse
-        env:
-          CIBW_ARCHS_MACOS: arm64
-          CIBW_SKIP: "{cp36-*,pp*,*-musllinux_*}"
-          CIBW_ENVIRONMENT: DUCC0_OPTIMIZATION=portable
-          CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_I686_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PYPY_X86_64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_AARCH64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PPC64LE_IMAGE: manylinux2014
-          CIBW_MANYLINUX_S390X_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PYPY_AARCH64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PYPY_I686_IMAGE: manylinux2014
-      - uses: actions/upload-artifact@v2
-        with:
-          path: ./wheelhouse/*.whl

.github/workflows/wheels_native_64bit.yml

-name: wheels_native_64bit
-on: [push]
-jobs:
-  build-wheels:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-20.04, macOS-10.15]
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          submodules: "recursive"
-      - uses: actions/setup-python@v2
-      - run: python -m pip install --user --upgrade cibuildwheel
-      - run: python -m cibuildwheel --output-dir wheelhouse
-        env:
-          CIBW_ARCHS: auto64
-          CIBW_SKIP: "{cp36-*,pp*,*-musllinux_*}"
-          CIBW_ENVIRONMENT: DUCC0_OPTIMIZATION=portable
-          CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_I686_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PYPY_X86_64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_AARCH64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PPC64LE_IMAGE: manylinux2014
-          CIBW_MANYLINUX_S390X_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PYPY_AARCH64_IMAGE: manylinux2014
-          CIBW_MANYLINUX_PYPY_I686_IMAGE: manylinux2014
-      - uses: actions/upload-artifact@v2
-        with:
-          path: ./wheelhouse/*.whl