refactor(http): remove unstable header and method modules

[tomas-zijdemans]

If we want to keep it, then these should be considered for merging instead: #6991 and #6992

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.38%. Comparing base (21ba810) to head (f830dce).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7004      +/-   ##
==========================================
- Coverage   94.41%   94.38%   -0.03%     
==========================================
  Files         630      628       -2     
  Lines       50435    50222     -213     
  Branches     8928     8928              
==========================================
- Hits        47616    47403     -213     
  Misses       2249     2249              
  Partials      570      570              

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[kt3k]

note: these were originally added in #4317 and #4320

what do people think?

cc @halvardssm

[halvardssm]

What is the reasoning for removing them?

I personally find it quite useful to have such headers and other static properties defined in the standard library as it reduces the amount of accidental typos.

Not against keeping them in sync with the IANA registry.

[tomas-zijdemans]

What is the reasoning for removing them?

Please see the discussion here: https://discord.com/channels/684898665143206084/775393009981849600/1472185311118495796

[tomas-zijdemans]

Rebased on main