Remove osx test cases since the dedup is mobile-only

Author: kotlarmilos

tests/dotnet/UnitTests/ProjectTest.cs

@@ -1932,8 +1932,6 @@ bool FindAssembly (string path, string dllName)
 		[Test]
 		[TestCase (ApplePlatform.iOS, "ios-arm64;", "-all,System.Private.CoreLib")]
 		[TestCase (ApplePlatform.iOS, "ios-arm64;", "all,-System.Private.CoreLib")]
-		[TestCase (ApplePlatform.MacOSX, "osx-arm64;osx-x64", "-all,System.Private.CoreLib")]
-		[TestCase (ApplePlatform.MacOSX, "osx-arm64;osx-x64", "all,-System.Private.CoreLib")]
 		[TestCase (ApplePlatform.MacCatalyst, "maccatalyst-arm64;maccatalyst-x64", "-all,System.Private.CoreLib")]
 		[TestCase (ApplePlatform.MacCatalyst, "maccatalyst-arm64;maccatalyst-x64", "all,-System.Private.CoreLib")]
 		[TestCase (ApplePlatform.TVOS, "tvos-arm64;", "-all,System.Private.CoreLib")]