fix clippy issues

.github/workflows/lint.yml

@@ -41,20 +41,4 @@ jobs:
       - name: cargo clippy
         run: cargo clippy --workspace --all-features -- -D warnings
 
-  udeps:
-    name: udeps
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: install rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
-          components: rustfmt
-
-      - name: install udeps
-        run: cargo install --git https://github.com/est31/cargo-udeps --locked
-      - name: cargo udeps
-        run: cargo +nightly udeps
-