fix: update pytest command to ignore agents tests and remove pytest.ini configuration

Author: BrunoV21

.github/workflows/python_package.yml

@@ -44,7 +44,7 @@ jobs:
           flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
       - name: Test with pytest
-        run: pytest tests/
+        run: pytest tests --ignore=tests/agents
       - name: Install package with agents requirements
         run: |
           python -m pip install .[agents]