chore(ci): remove setup for aws-lc-fips-sys

[AsakuraMizu]

These were introduced in #333 to support aws-lc-rs. Since aws-lc-rs was removed in #521, they are now useless.

[AsakuraMizu]

I noticed that currently -Z minimal-versions doesn't actually do anything. We should use cargo-minimal-versions instead. However, it is not working at the moment due to the feature selection issue with compio-driver (cargo-minimal-versions depends on cargo-hack, which builds each subcrate independently.).

[George-Miao]

I noticed that currently -Z minimal-versions doesn't actually do anything.

Hmm. Can you explain more?

[Berrysoft]

it is not working at the moment due to the feature selection issue with compio-driver

Let's wait for #528 then?

[George-Miao]

Can you also remove the relevant env variable in flake.nix?

[AsakuraMizu]

I noticed that currently -Z minimal-versions doesn't actually do anything.

Hmm. Can you explain more?

See https://github.com/taiki-e/cargo-minimal-versions#details. cargo update -Z minimal-versions needs to be executed before actual check. And this is the expected behavior:

[Berrysoft]

LGTM

[Berrysoft]

We should use cargo-minimal-versions instead.

Sounds reasonable. Feel free to create a PR for that if you're interested in.