fix: remove unused received counter in benchmark

Author: its-thepoe

crates/frame-converter/examples/benchmark.rs

@@ -63,18 +63,13 @@ fn benchmark_pool(
         pool.submit(frame, i as u64).expect("Submit failed");
     }
 
-    let mut received = 0u64;
     let deadline = Instant::now() + Duration::from_secs(30);
 
-    while received < frame_count as u64 && Instant::now() < deadline {
-        if let Some(_converted) = pool.recv_timeout(Duration::from_millis(100)) {
-            received += 1;
-        }
+    while Instant::now() < deadline {
+        let _ = pool.recv_timeout(Duration::from_millis(100));
         let stats = pool.stats();
         if stats.frames_converted >= frame_count as u64 {
-            while pool.try_recv().is_some() {
-                received += 1;
-            }
+            while pool.try_recv().is_some() {}
             break;
         }
     }