chore: remove redundant sas token from public test file

[BrendanWalsh]

These SAS tokens are redundant as the underlying file is already public. They are also inconvenient because static analysis tools flag them as a hazard.

[github-actions]

Hey @BrendanWalsh 👋!
Thank you so much for contributing to our repository 🙌.
Someone from SynapseML Team will be reviewing this pull request soon.

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[BrendanWalsh]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.41%. Comparing base (b7b6c78) to head (de96f24).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2462      +/-   ##
==========================================
- Coverage   84.42%   84.41%   -0.02%     
==========================================
  Files         335      335              
  Lines       17747    17747              
  Branches     1611     1611              
==========================================
- Hits        14983    14981       -2     
- Misses       2764     2766       +2     

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[TomFinley]

Thank you @BrendanWalsh .

[BrendanWalsh]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).