Remove unix-specific verification step

Author: levitsky

.github/workflows/pythonpackage.yml

@@ -34,9 +34,6 @@ jobs:
       run: |
         pip install --upgrade pip
         pip install .
-    - name: Verify installation
-      run: |
-        ls -la $(python -c "import site; print(site.getsitepackages()[0])")/AA_stat
     - name: Lint with flake8
       run: |
         pip install flake8