chore: delete unnecessary code

MemorialHouse/MHPresentation/MHPresentation/Source/Audio/AudioViewController.swift

@@ -128,24 +128,6 @@ final public class AudioViewController: UIViewController {
         requestMicrophonePermission()
     }
 
-    private func bind() {
-        let output = viewModel?.transform(input: input.eraseToAnyPublisher())
-        output?.sink(receiveValue: { [weak self] event in
-            switch event {
-            case .updatedAudioFileURL:
-                debugPrint("updated audio file URL")
-            case .savedAudioFile:
-                debugPrint("saved audio file")
-            case .deleteTemporaryAudioFile:
-                debugPrint("delete temporary audio file")
-            case .audioStart:
-                self?.startRecording()
-            case .audioStop:
-                self?.stopRecording()
-            }
-        }).store(in: &cancellables)
-    }
-
     private func setupBars() {
         let width = 300 / numberOfBars - 5
         let barSpacing = 5