Remove print statements before releasing on PyPi

[jochasinga]

There is current a few places where there are still print statements. Can we switch to logger instead?

https://github.com/mc2-project/mc2/blob/bfbec919c0e10a48b3655a4cde5b5a5640f9ef58/python-package/tests/azure/delete_azure_resources.py#L6

[jochasinga]

@chester-leung are these print statements save to remove and use logger instead?

[chester-leung]

Yes, we can replace these print statements with log messages. Currently I don't believe there's a logger configured for the tests as a whole though.