cleaning

src/engine/audio.rs

@@ -160,16 +160,6 @@ pub struct AnalysisHandle {
     thread: Option<JoinHandle<()>>,
 }
 
-impl AnalysisHandle {
-    #[allow(dead_code)]
-    pub fn shutdown(mut self) {
-        self.running.store(false, Ordering::SeqCst);
-        if let Some(t) = self.thread.take() {
-            let _ = t.join();
-        }
-    }
-}
-
 impl Drop for AnalysisHandle {
     fn drop(&mut self) {
         self.running.store(false, Ordering::SeqCst);