fix clippy warnings (#123)

* fix clippy warnings

* update CI ruff command

.github/workflows/ci.yaml

@@ -63,7 +63,7 @@ jobs:
       - name: install ruff
         run: python -m pip install ruff
       - name: run python lint
-        run: ruff --ignore=E501 ast --show-source
+        run: ruff check ast
 
       - name: spell checker
         uses: streetsidesoftware/cspell-action@v2

vendored/src/text_size/mod.rs

@@ -23,8 +23,6 @@ mod range;
 mod size;
 mod traits;
 
-#[cfg(feature = "schemars")]
-mod schemars_impls;
 #[cfg(feature = "serde")]
 mod serde_impls;
 

vendored/src/text_size/size.rs

@@ -5,7 +5,6 @@ use {
         fmt, iter,
         num::TryFromIntError,
         ops::{Add, AddAssign, Sub, SubAssign},
-        u32,
     },
 };