Drop old Python versions from the test matrix

Author: perimosocordiae

.github/workflows/main.yml

@@ -9,32 +9,6 @@ on:
     branches: [ master ]
 
 jobs:
-
-  # Checks compatibility with an old version of sklearn (0.21.3)
-  compatibility:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest]
-        python-version: ['3.6', '3.7']
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Run Tests with skggm + scikit-learn 0.21.3
-        env:
-          SKGGM_VERSION: a0ed406586c4364ea3297a658f415e13b5cbdaf8
-        run:  |
-          sudo apt-get install liblapack-dev
-          pip install --upgrade pip pytest
-          pip install wheel cython numpy scipy codecov pytest-cov
-          pip install scikit-learn==0.21.3
-          pip install git+https://github.com/skggm/skggm.git@${SKGGM_VERSION}
-          pytest test --cov
-          bash <(curl -s https://codecov.io/bash)
-          
   # Run normal testing with the latest versions of all dependencies
   build:
     runs-on: ${{ matrix.os }}