Fix warnings about unused private fields

avfaudioinputselectorcontrol.h:68:23: warning: private field 'm_service' is not used [-Wunused-private-field]

Change-Id: I5722a2d1bf592862af3a4d36554419a653662892
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

src/plugins/avfoundation/camera/avfaudioinputselectorcontrol.h

@@ -65,8 +65,6 @@ public:
     AVCaptureDevice *createCaptureDevice();
 
 private:
-    AVFCameraService *m_service;
-
     QString m_activeInput;
     bool m_dirty;
     QString m_defaultDevice;

src/plugins/avfoundation/camera/avfaudioinputselectorcontrol.mm

@@ -41,9 +41,9 @@ QT_USE_NAMESPACE
 
 AVFAudioInputSelectorControl::AVFAudioInputSelectorControl(AVFCameraService *service, QObject *parent)
    : QAudioInputSelectorControl(parent)
-   , m_service(service)
    , m_dirty(true)
 {
+    Q_UNUSED(service);
     NSArray *videoDevices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeAudio];
     for (AVCaptureDevice *device in videoDevices) {
         QString deviceId = QString::fromUtf8([[device uniqueID] UTF8String]);

src/plugins/avfoundation/camera/avfcameracontrol.h

@@ -65,7 +65,6 @@ private Q_SLOTS:
     void updateStatus();
 
 private:
-    AVFCameraService *m_service;
     AVFCameraSession *m_session;
 
     QCamera::State m_state;

src/plugins/avfoundation/camera/avfcameracontrol.mm

@@ -40,12 +40,12 @@ QT_USE_NAMESPACE
 
 AVFCameraControl::AVFCameraControl(AVFCameraService *service, QObject *parent)
    : QCameraControl(parent)
-   , m_service(service)
    , m_session(service->session())
    , m_state(QCamera::UnloadedState)
    , m_lastStatus(QCamera::UnloadedStatus)
    , m_captureMode(QCamera::CaptureStillImage)
 {
+    Q_UNUSED(service);
     connect(m_session, SIGNAL(stateChanged(QCamera::State)), SLOT(updateStatus()));
 }
 

src/plugins/avfoundation/camera/avfcamerametadatacontrol.h

@@ -55,7 +55,6 @@ public:
     QStringList availableMetaData() const;
 
 private:
-    AVFCameraService *m_service;
     QMap<QString, QVariant> m_tags;
 };
 

src/plugins/avfoundation/camera/avfcamerametadatacontrol.mm

@@ -40,8 +40,9 @@ QT_USE_NAMESPACE
 //metadata support is not implemented yet
 
 AVFCameraMetaDataControl::AVFCameraMetaDataControl(AVFCameraService *service, QObject *parent)
-    :QMetaDataWriterControl(parent), m_service(service)
+    :QMetaDataWriterControl(parent)
 {
+    Q_UNUSED(service);
 }
 
 AVFCameraMetaDataControl::~AVFCameraMetaDataControl()

src/plugins/avfoundation/camera/avfimagecapturecontrol.h

@@ -66,7 +66,6 @@ private Q_SLOTS:
     void updateReadyStatus();
 
 private:
-    AVFCameraService *m_service;
     AVFCameraSession *m_session;
     AVFCameraControl *m_cameraControl;
     bool m_ready;

src/plugins/avfoundation/camera/avfimagecapturecontrol.mm

@@ -46,13 +46,13 @@ QT_USE_NAMESPACE
 
 AVFImageCaptureControl::AVFImageCaptureControl(AVFCameraService *service, QObject *parent)
    : QCameraImageCaptureControl(parent)
-   , m_service(service)
    , m_session(service->session())
    , m_cameraControl(service->cameraControl())
    , m_ready(false)
    , m_lastCaptureId(0)
    , m_videoConnection(nil)
 {
+    Q_UNUSED(service);
     m_stillImageOutput = [[AVCaptureStillImageOutput alloc] init];
 
     NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys: