Remove FreeBSD's CAP_UNUSED* and CAP_ALL* constants

[asomers]

They aren't stable across OS versions and don't have any legitimate use in applications.

See #4183 for the corresponding change to the libc-0.2 branch.

Description

Remove unstable and non-useful definitions

Sources

This commit, for example, changed some of these constants in FreeBSD 15.

freebsd/freebsd-src@b165e9e

I was unable to find any applications using these constants with Github code search. Only libraries like this one that supplied bindings. I also audited every open source consumer of the capsicum-rs crate to ensure that none were using these constants.

Checklist

• Relevant tests in libc-test/semver have been updated
• No placeholder or unstable values like *LAST or *MAX are
  included (see #3131)
• Tested locally (cd libc-test && cargo test --target mytarget);
  especially relevant for platforms that may not be checked in CI

[rustbot]

r? @JohnTitor

rustbot has assigned @JohnTitor.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

[asomers]

I think the failure on aarch64-linux-android is unrelated.

[tgross35]

Thanks for the quick fix