Remove macOS port

We now have a proper native PC port (Moonlight Qt) and if we
wanted to bring the full iOS app over we can now use Catalyst.

Limelight/Stream/Connection.m

@@ -110,7 +110,6 @@ int ArInit(int audioConfiguration, POPUS_MULTISTREAM_CONFIGURATION opusConfig, v
                                                   opusConfig->mapping,
                                                   &err);
 
-#if TARGET_OS_IPHONE
     // Configure the audio session for our app
     NSError *audioSessionError = nil;
     AVAudioSession* audioSession = [AVAudioSession sharedInstance];
@@ -122,7 +121,6 @@ int ArInit(int audioConfiguration, POPUS_MULTISTREAM_CONFIGURATION opusConfig, v
     
     // FIXME: Calling this breaks surround audio for some reason
     //[audioSession setPreferredOutputNumberOfChannels:opusConfig->channelCount error:&audioSessionError];
-#endif
     
     OSStatus status;
     
@@ -203,10 +201,8 @@ void ArCleanup(void)
         audioCircularBuffer = NULL;
     }
     
-#if TARGET_OS_IPHONE
     // Audio session is now inactive
     [[AVAudioSession sharedInstance] setActive: NO error: nil];
-#endif
 }
 
 void ArDecodeAndPlaySample(char* sampleData, int sampleLength)
@@ -358,7 +354,6 @@ void ClConnectionStatusUpdate(int status)
         config.allowHevc = YES;
     }
 
-#if TARGET_OS_IPHONE
     // On iOS 11, we can use HEVC if the server supports encoding it
     // and this device has hardware decode for it (A9 and later).
     // Additionally, iPhone X had a bug which would cause video
@@ -367,13 +362,6 @@ void ClConnectionStatusUpdate(int status)
     if (@available(iOS 11.3, tvOS 11.3, *)) {
         _streamConfig.supportsHevc = config.allowHevc && VTIsHardwareDecodeSupported(kCMVideoCodecType_HEVC);
     }
-#else
-    if (@available(macOS 10.13, *)) {
-        // Streaming with limited bandwidth will result in better quality with HEVC
-        if (VTIsHardwareDecodeSupported(kCMVideoCodecType_HEVC) || _streamConfig.streamingRemotely != 0)
-            _streamConfig.supportsHevc = config.allowHevc;
-    }
-#endif
     
     // HEVC must be supported when HDR is enabled
     assert(!_streamConfig.enableHdr || _streamConfig.supportsHevc);

Limelight/Stream/StreamManager.m

@@ -78,14 +78,12 @@
         }
     }
 
-#if TARGET_OS_IPHONE
     // Set mouse delta factors from the screen resolution and stream size
     CGFloat screenScale = [[UIScreen mainScreen] scale];
     CGRect screenBounds = [[UIScreen mainScreen] bounds];
     CGSize screenSize = CGSizeMake(screenBounds.size.width * screenScale, screenBounds.size.height * screenScale);
     [((StreamView*)_renderView) setMouseDeltaFactors:_config.width / screenSize.width
                                                    y:_config.height / screenSize.height];
-#endif
     
     // Populate the config's version fields from serverinfo
     _config.appVersion = appversion;

Limelight/Stream/VideoDecoderRenderer.m

@@ -75,9 +75,6 @@
 - (void)setupWithVideoFormat:(int)videoFormat refreshRate:(int)refreshRate
 {
     self->videoFormat = videoFormat;
-#if !TARGET_OS_IPHONE
-    _view.codec = videoFormat;
-#endif
     
     if (refreshRate > 60) {
         // HACK: We seem to just get 60 Hz screen updates even with a 120 FPS stream if
@@ -255,11 +252,7 @@
                 
                 Log(LOG_I, @"Constructing new HEVC format description");
 
-#if TARGET_OS_IPHONE
                 if (@available(iOS 11.0, *)) {
-#else
-                if (@available(macOS 10.13, *)) {
-#endif
                     status = CMVideoFormatDescriptionCreateFromHEVCParameterSets(kCFAllocatorDefault,
                                                                                  3, /* count of parameter sets */
                                                                                  parameterSetPointers,
@@ -370,10 +363,6 @@
         CFDictionarySetValue(dict, kCMSampleAttachmentKey_DependsOnOthers, kCFBooleanFalse);
     }
 
-#if !TARGET_OS_IPHONE
-    _view.frameCount++;
-#endif
-
     // Enqueue video samples on the main thread
     dispatch_async(dispatch_get_main_queue(), ^{
         // Enqueue the next frame