remove blocks from test

Author: petercorke

.github/workflows/main.yml

@@ -67,7 +67,7 @@ jobs:
         python -m pip install .
     - name: Run coverage
       run: |
-        coverage run --source=machinevisiontoolbox -m pytest
+        coverage run --source=machinevisiontoolbox --omit 'machinevisiontoolbox/blocks/*' -m pytest
         coverage report
         coverage xml
     - name: upload coverage to Codecov