Revert "mac-avcapture: Add additional capture presets"

This reverts commit b1efb005ab24715a117839e5fdc26185bd0405e5.

This needs to be a runtime check, not a compile-time check.

plugins/mac-avcapture/av-capture.mm

@@ -1,4 +1,3 @@
-#import <AvailabilityMacros.h>
 #import <AVFoundation/AVFoundation.h>
 #import <CoreFoundation/CoreFoundation.h>
 #import <CoreMedia/CoreMedia.h>
@@ -1231,13 +1230,8 @@ static void *av_capture_create(obs_data_t *settings, obs_source_t *source)
 static NSArray *presets(void)
 {
 	return @[
-	//AVCaptureSessionPresetiFrame1280x720,
-	//AVCaptureSessionPresetiFrame960x540,
-#if defined(MAC_OS_X_VERSION_10_15) && \
-	MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_15
-		AVCaptureSessionPreset3840x2160,
-		AVCaptureSessionPreset1920x1080,
-#endif
+		//AVCaptureSessionPresetiFrame1280x720,
+		//AVCaptureSessionPresetiFrame960x540,
 		AVCaptureSessionPreset1280x720, AVCaptureSessionPreset960x540,
 		AVCaptureSessionPreset640x480, AVCaptureSessionPreset352x288,
 		AVCaptureSessionPreset320x240, AVCaptureSessionPresetHigh,
@@ -1258,11 +1252,6 @@ static NSString *preset_names(NSString *preset)
 		AVCaptureSessionPreset640x480: @"640x480",
 		AVCaptureSessionPreset960x540: @"960x540",
 		AVCaptureSessionPreset1280x720: @"1280x720",
-#if defined(MAC_OS_X_VERSION_10_15) && \
-	MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_15
-		AVCaptureSessionPreset1920x1080: @"1920x1080",
-		AVCaptureSessionPreset3840x2160: @"3840x2160",
-#endif
 		AVCaptureSessionPresetHigh: @"High",
 	};
 	NSString *name = preset_names[preset];