Removed dead test code

[marcusmoore]

Description

This small PR cleans up some dead code from tests by deleting a couple test files that only contain commented code and deleting commented test cases.

Type of change

• Chore

[shortcut-integration]

This pull request has been linked to Shortcut Story #25070: Remove unused test case files.

[what-the-diff]

PR Summary

• Simplification of UpdateUserApiTest.php
  This change has simplified the UpdateUserApiTest.php file by removing any unnecessary complexity. The InteractsWithAuthentication trait was removed to make the code cleaner, overall improving the user update operation tests.

• Tidy Up CategoryTest.php
  This PR improved the quality of the CategoryTest.php file by removing commented out test methods. It ensures that the code is cleaner and more maintainable, positively impacting the testing process for categories.