Update policy

[malancas]

Summary

Removing some small sections from the policy.

Release Note

Documentation

[codecov]

Codecov Report

Merging #251 (382cb77) into main (6f396cb) will not change coverage.
The diff coverage is n/a.

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[kommendorkapten]

I reckon we should remove this section too:
https://github.com/sigstore/timestamp-authority/pull/251/files#diff-669237df67d62d453aa0fb50309ac55463d0fe7f5760b750d80981dd2805d273L424-L426

The TSA shall make available to subscribers and relying parties its practice statement, and other relevant documentation, as necessary, to assess conformance to the time-stamp policy.

NOTE 2: The TSA is not generally required to make all the details of its practices public.

That section.

My interpretation:
I think it's concerning as if we open up the TSA to the public, any user would be a subscriber or relying party. Even if the TSA is not open to public use for requesting a time-stamp, any verifier is considered a relying party, and so may request the practice statement.

[kommendorkapten]

🚀