Fix warnings from rustc 1.65.0

Bug: 250026064
Test: m rust
Change-Id: Id9c0d9b4c3c234baecb4da62693d0c5cdb523aa1
diff --git a/virtualizationservice/src/composite.rs b/virtualizationservice/src/composite.rs
index c9a68ac..fe17ff4 100644
--- a/virtualizationservice/src/composite.rs
+++ b/virtualizationservice/src/composite.rs
@@ -51,7 +51,7 @@
         OpenOptions::new().create_new(true).read(true).write(true).open(footer_path).with_context(
             || format!("Failed to create composite image header {:?}", footer_path),
         )?;
-    let zero_filler_file = File::open(&zero_filler_path).with_context(|| {
+    let zero_filler_file = File::open(zero_filler_path).with_context(|| {
         format!("Failed to open composite image zero filler {:?}", zero_filler_path)
     })?;
 
@@ -66,7 +66,7 @@
     )?;
 
     // Re-open the composite image as read-only.
-    let composite_image = File::open(&output_path)
+    let composite_image = File::open(output_path)
         .with_context(|| format!("Failed to open composite image {:?}", output_path))?;
 
     files.push(header_file);