Remove WGL option.

src/Avalonia.OpenGL/AngleOptions.cs

@@ -7,8 +7,7 @@ namespace Avalonia.OpenGL
         public enum PlatformApi
         {
 			DirectX9,
-			DirectX11,
-            WGL
+			DirectX11
         }
 
         public IList<PlatformApi> AllowedPlatformApis { get; set; } = null;

src/Avalonia.OpenGL/EglDisplay.cs

@@ -38,7 +38,6 @@ namespace Avalonia.OpenGL
                     var allowedApis = AvaloniaLocator.Current.GetService<AngleOptions>()?.AllowedPlatformApis
                                       ?? new []
                                       {
-                                          AngleOptions.PlatformApi.WGL,
                                           AngleOptions.PlatformApi.DirectX11, 
                                           AngleOptions.PlatformApi.DirectX9
                                       };
@@ -50,8 +49,6 @@ namespace Avalonia.OpenGL
                             dapi = EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE;
                         else if (platformApi == AngleOptions.PlatformApi.DirectX11)
                             dapi = EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE;
-                        else if (platformApi == AngleOptions.PlatformApi.WGL)
-                            dapi = EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE;
                         else
                             continue;