chore: clean up pre-release codemods

[booc0mtaco]

Test Plan:

Simple delete of the code mods that were created during the alpha phase. Anyone on v15 won't need them (and they will persist in the alphas that folks are still using where relevant)

• Wrote automated tests
• CI tests / new tests are not applicable
• Manually tested my changes, but I want to keep the details secret
• Created and used an alpha publish
• Manually tested my changes, and here are the details:

[github-actions]

size-limit report 📦

Path	Size
components	87.49 KB (0%)
styles	27.65 KB (0%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.52%. Comparing base (7566e2c) to head (69b7b31).

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #2000      +/-   ##
==========================================
+ Coverage   97.40%   97.52%   +0.12%     
==========================================
  Files         109      108       -1     
  Lines        2581     2545      -36     
  Branches      648      635      -13     
==========================================
- Hits         2514     2482      -32     
+ Misses         65       61       -4     
  Partials        2        2              

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