Fix clippy warnings

backend/src/bin/read-driver-db.rs

@@ -125,11 +125,8 @@ fn read_all(dir: &Path) -> anyhow::Result<HashMap<String, Driver>> {
 }
 
 pub fn parse_crate(path: &Path) -> anyhow::Result<(String, Driver)> {
-    if !path
-        .extension()
-        .is_some_and(|ext| ext == OsStr::new("toml"))
-    {
-        bail!("Driver info has wrong exctension: {path:?}");
+    if path.extension().is_none_or(|ext| ext != OsStr::new("toml")) {
+        bail!("Driver info has wrong extension: {path:?}");
     }
 
     let Some(crate_name) = path.file_stem() else {

backend/src/description.rs

@@ -34,7 +34,7 @@ mod spdx_expression_serde {
     }
 
     struct ExpressionVisitor;
-    impl<'de> serde::de::Visitor<'de> for ExpressionVisitor {
+    impl serde::de::Visitor<'_> for ExpressionVisitor {
         type Value = Expression;
 
         fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {

backend/src/driver_db/categories.rs

@@ -1,12 +1,6 @@
-use std::{
-    borrow::Cow,
-    collections::BTreeMap,
-    fmt::{Debug, Display},
-    str::FromStr,
-};
-
-use anyhow::bail;
-use schemars::{json_schema, JsonSchema};
+use std::fmt::Debug;
+
+use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 
 #[derive(