Fix Jupter NB Test failure due bad import

[dipannita08]

Description

Fix bad import in tunix/utils.py causing a jupyter nb failure.

Tests

• Unit tests
• Github CI

Please describe how you tested this change, and include any instructions and/or
commands to reproduce.

Checklist

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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