Remove legal docs section + add redirects

[sydney-runkle]

Waiting on me moving these to pydantic.dev before we merge

[cloudflare-workers-and-pages]

Deploying logfire-docs with    Cloudflare Pages

Latest commit:	b4461f7
Status:	✅  Deploy successful!
Preview URL:	https://a21d6153.logfire-docs.pages.dev
Branch Preview URL:	https://remove-legal-docs.logfire-docs.pages.dev

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (fbfedff) to head (b4461f7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #558   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          133       133           
  Lines        10238     10238           
  Branches      1397      1397           
=========================================
  Hits         10238     10238           

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