Run nightly Clippy over the Ruff repo (#5670)

## Summary

This is the result of running `cargo +nightly clippy --workspace
--all-targets --all-features -- -D warnings` and fixing all violations.
Just wanted to see if there were any interesting new checks on nightly
👀

crates/ruff_python_formatter/src/comments/mod.rs

@@ -436,7 +436,7 @@ mod tests {
 
             let comment_ranges = comment_ranges.finish();
 
-            let parsed = parse_tokens(tokens.into_iter(), Mode::Module, "test.py")
+            let parsed = parse_tokens(tokens, Mode::Module, "test.py")
                 .expect("Expect source to be valid Python");
 
             CommentsTestCase {

crates/ruff_python_formatter/src/module/mod.rs

@@ -26,7 +26,7 @@ impl<'ast> AsFormat<PyFormatContext<'ast>> for Mod {
     type Format<'a> = FormatRefWithRule<'a, Mod, FormatMod, PyFormatContext<'ast>>;
 
     fn format(&self) -> Self::Format<'_> {
-        FormatRefWithRule::new(self, FormatMod::default())
+        FormatRefWithRule::new(self, FormatMod)
     }
 }
 
@@ -34,6 +34,6 @@ impl<'ast> IntoFormat<PyFormatContext<'ast>> for Mod {
     type Format = FormatOwnedWithRule<Mod, FormatMod, PyFormatContext<'ast>>;
 
     fn into_format(self) -> Self::Format {
-        FormatOwnedWithRule::new(self, FormatMod::default())
+        FormatOwnedWithRule::new(self, FormatMod)
     }
 }

crates/ruff_python_formatter/src/statement/mod.rs

@@ -72,7 +72,7 @@ impl<'ast> AsFormat<PyFormatContext<'ast>> for Stmt {
     type Format<'a> = FormatRefWithRule<'a, Stmt, FormatStmt, PyFormatContext<'ast>>;
 
     fn format(&self) -> Self::Format<'_> {
-        FormatRefWithRule::new(self, FormatStmt::default())
+        FormatRefWithRule::new(self, FormatStmt)
     }
 }
 
@@ -80,6 +80,6 @@ impl<'ast> IntoFormat<PyFormatContext<'ast>> for Stmt {
     type Format = FormatOwnedWithRule<Stmt, FormatStmt, PyFormatContext<'ast>>;
 
     fn into_format(self) -> Self::Format {
-        FormatOwnedWithRule::new(self, FormatStmt::default())
+        FormatOwnedWithRule::new(self, FormatStmt)
     }
 }

crates/ruff_python_formatter/src/statement/stmt_function_def.rs

@@ -124,7 +124,7 @@ impl<'def, 'ast> AsFormat<PyFormatContext<'ast>> for AnyFunctionDefinition<'def>
     > where Self: 'a;
 
     fn format(&self) -> Self::Format<'_> {
-        FormatRefWithRule::new(self, FormatAnyFunctionDef::default())
+        FormatRefWithRule::new(self, FormatAnyFunctionDef)
     }
 }