chore: Remove unused dead code

[matthewelwell]

See #6953 for details on this PR.

[claude]

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3 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs	Ignored		Mar 16, 2026 6:35am
flagsmith-frontend-preview	Ignored		Mar 16, 2026 6:35am
flagsmith-frontend-staging	Ignored		Mar 16, 2026 6:35am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-e2e:pr-6955	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-frontend:pr-6955	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-api-test:pr-6955	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-6955	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-6955	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-6955	Finished ✅	Results ✅

[github-actions]

Playwright Test Results (oss - depot-ubuntu-latest-16)

 10 passed

Details

 10 tests across 7 suites
 11.2 seconds
 4c14dd4
 🔄 Run: #15300 (attempt 1)

Playwright Test Results (oss - depot-ubuntu-latest-arm-16)

 10 passed

Details

 10 tests across 7 suites
 48.5 seconds
 4c14dd4
 🔄 Run: #15300 (attempt 1)

Playwright Test Results (private-cloud - depot-ubuntu-latest-arm-16)

 16 passed

Details

 16 tests across 13 suites
 27.6 seconds
 4c14dd4
 🔄 Run: #15300 (attempt 1)

Playwright Test Results (private-cloud - depot-ubuntu-latest-16)

 1 passed

Details

 1 test across 1 suite
 53.9 seconds
 4c14dd4
 🔄 Run: #15300 (attempt 1)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.33%. Comparing base (696bf62) to head (4c14dd4).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6955      +/-   ##
==========================================
+ Coverage   98.31%   98.33%   +0.01%     
==========================================
  Files        1335     1333       -2     
  Lines       49745    49710      -35     
==========================================
- Hits        48907    48880      -27     
+ Misses        838      830       -8     

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