[PM-14894] Drop Tax Rate tables - Stage 1

[jonashendrickx]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-14894

📔 Objective

The tax rates are no longer stored in the database as we now rely on Stripe. This pull request will prepare allowing us to drop the tables and removes all relevant screens in the admin portal.

📸 Screenshots

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 43.94%. Comparing base (f265911) to head (dfe33b0).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Admin/Views/Shared/_Layout.cshtml	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5236      +/-   ##
==========================================
+ Coverage   43.75%   43.94%   +0.19%     
==========================================
  Files        1476     1469       -7     
  Lines       68146    67831     -315     
  Branches     6172     6132      -40     
==========================================
- Hits        29816    29808       -8     
+ Misses      37032    36726     -306     
+ Partials     1298     1297       -1     

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[github-actions]

Checkmarx One – Scan Summary & Details – f9b6f3d3-5854-4506-8f38-4d936e04c39e

No New Or Fixed Issues Found