change: remove FLAG for userbility

[kannkyo]

Describe your changes

Issue ticket number and link

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics?
• Will this be part of a product update? If yes, please write one phrase about this update.

[github-actions]

flake8 results

    1 files  ±0  51 suites  ±0   0s ⏱️ ±0s
  88 tests ±0    1 ✔️ ±0  0 💤 ±0    87 ❌ ±0 
542 runs  ±0  12 ✔️ ±0  0 💤 ±0  530 ❌ ±0 

For more details on these failures, see this check.

Results for commit 4829c5b. ± Comparison against base commit 188a605.

[codecov]

Codecov Report

Base: 58.09% // Head: 59.10% // Increases project coverage by +1.00% 🎉

Coverage data is based on head (4829c5b) compared to base (4adc3f4).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 4829c5b differs from pull request most recent head 2a87089. Consider uploading reports for the commit 2a87089 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #73      +/-   ##
==========================================
+ Coverage   58.09%   59.10%   +1.00%     
==========================================
  Files          43       43              
  Lines        4200     4208       +8     
==========================================
+ Hits         2440     2487      +47     
+ Misses       1760     1721      -39     

Flag	Coverage Δ
unittests	59.10% <100.00%> (+1.00%)	⬆️

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

Impacted Files	Coverage Δ
src/nvd_api/__init__.py	100.00% <ø> (ø)
src/nvd_api/client.py	100.00% <100.00%> (ø)
...vulnerabilities_inner_cve_vendor_comments_inner.py	56.75% <0.00%> (+27.02%)	⬆️
.../cpe_oas_products_inner_cpe_deprecated_by_inner.py	60.00% <0.00%> (+27.14%)	⬆️

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