revert: restore #![allow(dead_code)] - clippy -D warnings treats warn as error
The #742 PR changed #![allow(dead_code)] to #![warn(dead_code)], but
CI runs clippy with -D warnings which turns warnings into errors.
This caused CI failures across multiple PRs.
Reverting to #![allow(dead_code)] until the dead code is actually
cleaned up. The 189 warnings in ecstore should be fixed incrementally
by deleting dead code and adding item-level allows, not by changing
the crate-level policy.
* fix: add tokio-test
* fix: "called `unwrap` on `v` after checking its variant with `is_some`"
= help: try using `if let` or `match`
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
= note: `-D clippy::unnecessary-unwrap` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::unnecessary_unwrap)]`
* fmt
* set toolchain 1.88.0
* fmt
* fix: cliip
Henry Guo