Delete the downloaded zip and folder in `retrieve_dataset`

[gaugup]

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Description

Delete the downloaded zip and folder in retrieve_dataset

Checklist

• [ ] I have added screenshots above for all UI changes.
• [ ] I have added e2e tests for all UI changes.
• [ ] Documentation was updated if it was needed.

[codecov-commenter]

Codecov Report

Merging #2150 (6537c28) into main (4aa5fb0) will increase coverage by 1.19%. The diff coverage is 90.90%.

@@            Coverage Diff             @@
##             main    #2150      +/-   ##
==========================================
+ Coverage   91.02%   92.21%   +1.19%     
==========================================
  Files         115      103      -12     
  Lines        6058     5141     -917     
==========================================
- Hits         5514     4741     -773     
+ Misses        544      400     -144     

Flag	Coverage Δ
unittests	92.21% <90.90%> (+1.19%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
rai_test_utils/rai_test_utils/utilities/utils.py	92.68% <90.00%> (+0.79%)	:arrow_up:
...ai_test_utils/rai_test_utils/utilities/__init__.py	100.00% <100.00%> (ø)

... and 12 files with indirect coverage changes

[github-actions[bot]]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/gaugup/DeleteDownloadedFolder/dashboard/index.html