[PM-17984] Remove AES128-CBC+HMAC encryption

[quexten]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-17984

📔 Objective

Removes AES128-CBC-HMAC encryption. This type was never actually used, and makes it impossible to uniquely determine the key type, since keys are currently just typed by size, and this has the same size as type 0 keys.

Blocks: #127

⏰ 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

[github-actions]

Checkmarx One – Scan Summary & Details – 4e073630-966e-4da5-85cc-f2f039638b0a

Great job, no security vulnerabilities found in this Pull Request

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.41%. Comparing base (00ffa38) to head (00f12e2).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
- Coverage   65.70%   65.41%   -0.30%     
==========================================
  Files         194      194              
  Lines       14930    14875      -55     
==========================================
- Hits         9810     9730      -80     
- Misses       5120     5145      +25     

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[Hinton]

Does what it claims to do which is removing AesCbc128_HmacSha256_B64

[dani-garcia]

LGTM, this should be able to me merged without conflicting on #8