Remove --iterations=8

Author: cclauss

.github/workflows/integration.yaml

@@ -45,7 +45,7 @@ jobs:
           pip install --upgrade pip setuptools wheel
           pip install -r dev_requirements.txt
           python setup.py build_ext --inplace
-          python -m pytest --iterations=8 --parallel-threads=auto
+          python -m pytest --parallel-threads=auto
       - name: build and install the wheel
         run: |
           python setup.py bdist_wheel