Remove unused `allow(dead_code)`

See 31fe9628cf.

aya-log/src/lib.rs

@@ -76,11 +76,9 @@ use bytes::BytesMut;
 use log::{error, Log, Record};
 use thiserror::Error;
 
-#[allow(dead_code)] // TODO(https://github.com/rust-lang/rust/issues/120770): Remove when false positive is fixed.
 #[derive(Copy, Clone)]
 #[repr(transparent)]
 struct RecordFieldWrapper(RecordField);
-#[allow(dead_code)] // TODO(https://github.com/rust-lang/rust/issues/120770): Remove when false positive is fixed.
 #[derive(Copy, Clone)]
 #[repr(transparent)]
 struct ArgumentWrapper(Argument);