Fix workflows

.github/_workflows/build.yml

@@ -1,33 +0,0 @@
-name: Build and test
-
-on: [push]
-
-jobs:
-  build:
-    strategy:
-      max-parallel: 4
-      matrix:
-        platform: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [2.7, 3.5, 3.6, 3.7]
-    runs-on: ${{ matrix.platform }}
-
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip==18.1 setuptools
-        pip install -r requirements.txt
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip==18.1 setuptools
-        pip install -r requirements.txt
-    - name: Compile and build sdist
-      run: |
-        python setup.py build_ext --inplace
-        python setup.py sdist --formats=gztar
-    - name: Test with pytest
-      run: python -m pytest tests