chore: Remove unused dependencies (#97)

## Description

Lose some non-used deps. Futures-buffered is reexported by n0-future, as
I learned yesterday

## Breaking Changes

None

## Notes & open questions

None

## Change checklist

- [ ] Self-review.
- [ ] Documentation updates following the [style
guide](https://rust-lang.github.io/rfcs/1574-more-api-documentation-conventions.html#appendix-a-full-conventions-text),
if relevant.
- [ ] Tests if relevant.
- [ ] All breaking changes documented.

Author: rklaehn

Cargo.lock

@@ -44,8 +44,6 @@ iroh-base = "0.90"
 reflink-copy = "0.1.24"
 irpc = { version = "0.5.0", features = ["rpc", "quinn_endpoint_setup", "message_spans", "stream", "derive"], default-features = false }
 iroh-metrics = { version = "0.35" }
-hashlink = "0.10.0"
-futures-buffered = "0.2.11"
 
 [dev-dependencies]
 clap = { version = "4.5.31", features = ["derive"] }