Update Step-1 PDF-Pre-Processing-Logic.ipynb to remove "text not defined"

[tiansiyuan]

What does this PR do?

Fixes # (issue)

Feature/Issue validation/testing

Please describe the tests that you ran to verify your changes and relevant result summary. Provide instructions so it can be reproduced. Please also list any relevant details for your test configuration.

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• [ ] Test B Logs for Test B

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