chore: switch from udeps to machete (#178)

Seems like machete much faster and catches more stuff (see examples
below).

Note: machete uses a regex basically, so there might be false-positives
down the line, if this happens add:

```
[package.metadata.cargo-machete]
ignored = ["package_that_machete_thinks_isnt_being_used"]
```

Co-Authored-By: Gilad Chase <gilad@starkware.com>

.github/workflows/ci.yml

@@ -64,17 +64,9 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - run: cargo test
 
-  udeps:
+  unused-dependencies:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: nightly-2024-01-12
-      - uses: Swatinem/rust-cache@v2
-      - name: Install udeps, should be cached unless `Cargo.{toml.lock}` or this workflow change
-        uses: baptiste0928/cargo-install@v3
-        with:
-          crate: cargo-udeps
-      - name: Run udeps (detect unused dependencies)
-        run: cargo udeps
+      - name: Run Machete (detect unused dependencies)
+        uses: bnjbvr/cargo-machete@main

crates/gateway/Cargo.toml

@@ -15,7 +15,6 @@ testing = []
 axum.workspace = true
 blockifier.workspace = true
 cairo-lang-starknet-classes.workspace = true
-clap.workspace = true
 hyper.workspace = true
 mempool_infra = { path = "../mempool_infra", version = "0.0" }
 papyrus_config.workspace = true
@@ -27,7 +26,6 @@ starknet_mempool_types = { path = "../mempool_types", version = "0.0" }
 thiserror.workspace = true
 tokio.workspace = true
 tower.workspace = true
-url.workspace = true
 validator.workspace = true
 
 [dev-dependencies]

crates/mempool_infra/Cargo.toml

@@ -13,14 +13,11 @@ workspace = true
 
 [dependencies]
 async-trait.workspace = true
-clap.workspace = true
 serde.workspace = true
-serde_json.workspace = true
 papyrus_config.workspace = true
 thiserror.workspace = true
 tokio.workspace = true
 
 [dev-dependencies]
 assert_matches.workspace = true
 pretty_assertions.workspace = true
-

crates/mempool_node/Cargo.toml

@@ -9,14 +9,10 @@ license.workspace = true
 workspace = true
 
 [dependencies]
-async-trait.workspace = true
 clap.workspace = true
 const_format.workspace = true
 starknet_gateway = { path = "../gateway", version = "0.0" }
 serde.workspace = true
-serde_json.workspace = true
-starknet_api.workspace = true
-thiserror.workspace = true
 papyrus_config.workspace = true
 tokio.workspace = true
 validator.workspace = true