Revert "[Build] Trying something to fix the build"

This reverts commit 57dff049a2.

build.cake

@@ -30,6 +30,8 @@ var AppendEnvironmentVariable = new Action<string, string> ((name, value) => {
 CakeSpec.Libs = new ISolutionBuilder [] {
 	new IOSSolutionBuilder {
 		SolutionPath = "binding/SkiaSharp.sln",
+        IsWindowsCompatible = false,
+        IsMacCompatible = true,
 		OutputFiles = new [] { 
 			new OutputFileCopy {
 				FromFile = "./binding/SkiaSharp.Android/bin/Release/SkiaSharp.dll",
@@ -64,9 +66,13 @@ CakeSpec.Libs = new ISolutionBuilder [] {
 
 CakeSpec.Samples = new ISolutionBuilder [] {
 	new IOSSolutionBuilder { 
+        IsWindowsCompatible = false,
+        IsMacCompatible = true,
         SolutionPath = "./samples/Skia.OSX.Demo/Skia.OSX.Demo.sln"
     },
 	new IOSSolutionBuilder { 
+        IsWindowsCompatible = false,
+        IsMacCompatible = true,
         SolutionPath = "./samples/Skia.Forms.Demo/Skia.Forms.Demo.sln" 
     },
 	new DefaultSolutionBuilder {