fix mac build

Author: stakira

OpenUtau.Plugin.Builtin/KoreanCBNNPhonemizer.cs

@@ -1,12 +1,8 @@
-using System;
+using System;
 using System.Collections.Generic;
-using System.Drawing;
 using System.Linq;
 using OpenUtau.Api;
-using OpenUtau.Classic;
 using OpenUtau.Core.Ustx;
-using Serilog;
-using static OpenUtau.Api.Phonemizer;
 
 namespace OpenUtau.Plugin.Builtin {
      /// This phonemizer is based on 'KOR CVC Phonemizer'(by NANA). ///

OpenUtau.Plugin.Builtin/KoreanCVCPhonemizer.cs

@@ -1,12 +1,8 @@
-using System;
+using System;
 using System.Collections.Generic;
-using System.Drawing;
 using System.Linq;
 using OpenUtau.Api;
-using OpenUtau.Classic;
 using OpenUtau.Core.Ustx;
-using Serilog;
-using static OpenUtau.Api.Phonemizer;
 
 namespace OpenUtau.Plugin.Builtin {
     [Phonemizer("KoreanCVCPhonemizer", "KO CVC", "NANA", language:"KO")]

OpenUtau/Views/SingersDialog.axaml.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Drawing;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
@@ -60,10 +59,6 @@ async void OnSetPortrait(object sender, RoutedEventArgs args) {
                 return;
             }
             try {
-                using (var stream = File.OpenRead(file)) {
-                    var portrait = new Bitmap(stream);
-                    portrait.Dispose();
-                }
                 viewModel.SetPortrait(Path.GetRelativePath(viewModel.Singer.Location, file));
             } catch (Exception e) {
                 Log.Error(e, "Failed to set portrait");