Remove init file from tests/

[claudio-tw]

Context

This Pr removes the __init__.py file from the directory tests/. The file was responsible for some weird behviour when calling the tests with pytest from a notebook.

Checklist

• [x] Change meets or does not compromise the Baseline Security Requirements

[wise-github-bot-app[bot]]

The approval(s) from AlxdrPolyakov do(es)n't fullfill the approvers requirements because:

• The approver's cost centre, PRDANA, maps to the ANALYST business function. As the code that was changed is owned by ENGINEERING, this approval won't satisfy our separation of duties check. We'll need an additional approval from someone in ENGINEERING. This approval may still help satisfy other codeowner requirements.

[wise-github-bot-app[bot]]

The approval(s) from pereplanellTW do(es)n't fullfill the approvers requirements because:

• The approver's cost centre, MRKANA, maps to the ANALYST business function. As the code that was changed is owned by ENGINEERING, this approval won't satisfy our separation of duties check. We'll need an additional approval from someone in ENGINEERING. This approval may still help satisfy other codeowner requirements.