Fix some dead code warnings

libraries/extensions/ros2-bridge/msg-gen/src/lib.rs

@@ -9,9 +9,7 @@
 
 use std::path::Path;
 
-use proc_macro2::Span;
 use quote::quote;
-use syn::Ident;
 
 pub mod parser;
 pub mod types;
@@ -46,6 +44,7 @@ where
         (
             quote! { #[cxx::bridge] },
             quote! {
+                #[allow(dead_code)]
                 extern "C++" {
                     type CombinedEvents = crate::ffi::CombinedEvents;
                     type CombinedEvent = crate::ffi::CombinedEvent;

libraries/extensions/ros2-bridge/msg-gen/src/types/primitives.rs

@@ -131,7 +131,6 @@ pub struct NamedType(pub String);
 impl NamedType {
     fn type_tokens(&self, package: &str) -> impl ToTokens {
         let package = Ident::new(package, Span::call_site());
-        let namespace = Ident::new("msg", Span::call_site());
         let name = Ident::new(&self.0, Span::call_site());
         let ident = format_ident!("{package}__{name}");
         quote! { #ident }
@@ -174,7 +173,6 @@ pub struct NamespacedType {
 impl NamespacedType {
     fn type_tokens(&self) -> impl ToTokens {
         let package = Ident::new(&self.package, Span::call_site());
-        let namespace = Ident::new(&self.namespace, Span::call_site());
         let name = Ident::new(&self.name, Span::call_site());
         let ident = format_ident!("{package}__{name}");
         quote! { #ident }