Update code for Rust 1.83.0

Test: m rust
Bug: 384401387
Change-Id: Id14002c889960c6c80d290090e329575fa363eff

remoteauth/service/jni/src/remoteauth_jni_android_platform.rs

@@ -140,6 +140,7 @@ impl JavaPlatform {
 }
 
 impl Platform for JavaPlatform {
+    #[allow(clippy::unit_arg)]
     fn send_request(
         &mut self,
         connection_id: i32,

remoteauth/service/jni/src/unique_jvm.rs

@@ -41,6 +41,7 @@ pub(crate) fn set_once(jvm: JavaVM) -> Result<()> {
     Ok(())
 }
 /// Gets a 'static reference to the unique JavaVM. Returns None if set_once() was never called.
+#[allow(static_mut_refs)]
 pub(crate) fn get_static_ref() -> Option<&'static Arc<JavaVM>> {
     // Safety: follows [this pattern](https://doc.rust-lang.org/std/sync/struct.Once.html).
     // Modification to static mut is nested inside call_once.