removed unused import and fixed tests for swift testing

ElementX/Sources/Services/Audio/Player/AudioPlayerProtocol.swift

@@ -41,9 +41,9 @@ protocol AudioPlayerProtocol: AnyObject {
     var playbackURL: URL? { get }
     var state: MediaPlayerState { get }
     var playbackSpeed: Float { get }
-
+    
     var actions: AnyPublisher<AudioPlayerAction, Never> { get }
-
+    
     func load(sourceURL: URL, playbackURL: URL, autoplay: Bool)
     func reset()
     func play()

ElementX/Sources/Services/Audio/Player/AudioPlayerState.swift

@@ -37,12 +37,12 @@ class AudioPlayerState: ObservableObject, Identifiable {
     /// updates are delayed by a fixed amount of time
     @Published private(set) var playerButtonPlaybackState: AudioPlayerPlaybackState
     @Published private(set) var playbackSpeed: VoiceMessagePlaybackSpeed
-
+    
     private weak var audioPlayer: AudioPlayerProtocol?
     private var audioPlayerSubscription: AnyCancellable?
     private var playbackStateSubscription: AnyCancellable?
     private var displayLink: CADisplayLink?
-
+    
     /// The file url that the last player attached to this object has loaded.
     /// The file url persists even if the AudioPlayer will be detached later.
     private(set) var fileURL: URL?
@@ -58,7 +58,7 @@ class AudioPlayerState: ObservableObject, Identifiable {
     var isPublishingProgress: Bool {
         displayLink != nil
     }
-
+    
     init(id: AudioPlayerStateIdentifier, title: String,
          duration: Double,
          waveform: EstimatedWaveform? = nil,
@@ -119,7 +119,7 @@ class AudioPlayerState: ObservableObject, Identifiable {
     func reportError() {
         playbackState = .error
     }
-
+    
     func setPlaybackSpeed(_ speed: VoiceMessagePlaybackSpeed) {
         playbackSpeed = speed
         audioPlayer?.setPlaybackSpeed(speed.rawValue)