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 94.55%. Comparing base (f0c9f14) to head (45c9fbe).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7004      +/-   ##
==========================================
- Coverage   94.57%   94.55%   -0.03%     
==========================================
  Files         636      634       -2     
  Lines       52138    51925     -213     
  Branches     9399     9399              
==========================================
- Hits        49311    49097     -214     
  Misses       2249     2249              
- Partials      578      579       +1     

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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

[fibibot]

Deletion is clean — no residual HEADER./METHOD. references after the file_server.ts substitutions, and both entries are gone from http/deno.json. The strategic keep-vs-remove question (raised by halvardssm) is the maintainer's call; deferring on that, hence COMMENT not APPROVE.

• nit: http/mod.ts:29-31 still has the ## Methods section in the module docblock describing the removed module — should be deleted alongside.

[tomas-zijdemans]

Thanks @fibibot. Fixed.