Fix unused warnings in Rust Proto

rust/BUILD

@@ -48,7 +48,6 @@ rust_library(
 PROTOBUF_SHARED = [
     "enum.rs",
     "internal.rs",
-    "macros.rs",
     "optional.rs",
     "primitive.rs",
     "proxied.rs",

rust/cpp.rs

@@ -10,7 +10,7 @@
 use crate::__internal::{Enum, Private};
 use crate::{
     Map, MapIter, Mut, ProtoStr, Proxied, ProxiedInMapValue, ProxiedInRepeated, Repeated,
-    RepeatedMut, RepeatedView, SettableValue, View,
+    RepeatedMut, RepeatedView, View,
 };
 use core::fmt::Debug;
 use paste::paste;

rust/shared.rs

@@ -56,7 +56,6 @@ pub mod __runtime;
 
 #[path = "enum.rs"]
 mod r#enum;
-mod macros;
 mod map;
 mod optional;
 mod primitive;

rust/string.rs

@@ -13,7 +13,6 @@ use crate::__internal::Private;
 use crate::__runtime::{
     BytesAbsentMutData, BytesPresentMutData, InnerBytesMut, PtrAndLen, RawMessage,
 };
-use crate::macros::impl_forwarding_settable_value;
 use crate::{
     AbsentField, FieldEntry, Mut, MutProxied, MutProxy, Optional, PresentField, Proxied,
     ProxiedWithPresence, SettableValue, View, ViewProxy,

rust/upb.rs

@@ -10,7 +10,7 @@
 use crate::__internal::{Enum, Private};
 use crate::{
     Map, MapIter, MapMut, MapView, Mut, ProtoStr, Proxied, ProxiedInMapValue, ProxiedInRepeated,
-    Repeated, RepeatedMut, RepeatedView, SettableValue, View, ViewProxy,
+    Repeated, RepeatedMut, RepeatedView, View, ViewProxy,
 };
 use core::fmt::Debug;
 use std::alloc::Layout;