Remove doc_scan check: problem with cffi & Python 3.10

Author: echarrod

.github/workflows/tests.yaml

@@ -49,5 +49,3 @@ jobs:
       - run: pushd examples/aml && pip install -r requirements.txt && popd
 
       - run: pushd examples/yoti_example_flask && pip install -r requirements.txt && popd
-      
-      - run: pushd examples/doc_scan && pip install -r requirements.txt && popd