remove test that aserts .NET Standard should be prefered over .NET Framework

src/Workspaces/MSBuildTest/NetCoreTests.cs

@@ -274,21 +274,6 @@ public async Task TestOpenProject_NetCoreMultiTFM_ProjectReference()
             await AssertNetCoreMultiTFMProject(projectFilePath);
         }
 
-        [ConditionalFact(typeof(VisualStudioMSBuildInstalled), typeof(DotNetCoreSdk.IsAvailable), AlwaysSkip = "https://github.com/dotnet/roslyn/issues/42772")]
-        [Trait(Traits.Feature, Traits.Features.MSBuildWorkspace)]
-        [Trait(Traits.Feature, Traits.Features.NetCore)]
-        public async Task TestOpenProject_NetCoreMultiTFM_ProjectReferenceWithReversedTFMs()
-        {
-            CreateFiles(GetNetCoreMultiTFMFiles_ProjectReferenceWithReversedTFMs());
-
-            // Restoring for Project.csproj should also restore Library.csproj
-            DotNetRestore(@"Project\Project.csproj");
-
-            var projectFilePath = GetSolutionFileName(@"Project\Project.csproj");
-
-            await AssertNetCoreMultiTFMProject(projectFilePath);
-        }
-
         private static async Task AssertNetCoreMultiTFMProject(string projectFilePath)
         {
             using (var workspace = CreateMSBuildWorkspace())

src/Workspaces/MSBuildTest/Resources/NetCoreMultiTFM_ProjectReferenceWithReversedTFMs/Class1.cs

-using System;
-
-namespace NetCoreApp2
-{
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            Console.WriteLine("Hello World!");
-        }
-    }
-}

src/Workspaces/MSBuildTest/Resources/NetCoreMultiTFM_ProjectReferenceWithReversedTFMs/Library.csproj

-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFrameworks>net461;netstandard2.0</TargetFrameworks>
-  </PropertyGroup>
-
-</Project>

src/Workspaces/MSBuildTest/Resources/NetCoreMultiTFM_ProjectReferenceWithReversedTFMs/Program.cs

-using System;
-
-namespace NetCoreApp2
-{
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            Console.WriteLine("Hello World!");
-        }
-    }
-}

src/Workspaces/MSBuildTest/Resources/NetCoreMultiTFM_ProjectReferenceWithReversedTFMs/Project.csproj

-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFrameworks>netcoreapp2.1;net461</TargetFrameworks>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Library\Library.csproj" />
-  </ItemGroup>
-
-</Project>

src/Workspaces/MSBuildTest/TestFiles/Resources.cs

@@ -145,8 +145,6 @@ public static class CSharp
                 public static string NetCoreMultiTFM_ProjectReference_Library => GetText("NetCoreMultiTFM_ProjectReference.Library.csproj");
                 public static string NetCoreMultiTFM_ProjectReference_Project => GetText("NetCoreMultiTFM_ProjectReference.Project.csproj");
                 public static string NetCoreMultiTFM_ProjectReferenceToFSharp_CSharpLib = GetText("NetCoreMultiTFM_ProjectReferenceToFSharp.csharplib.csharplib.csproj");
-                public static string NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Library => GetText("NetCoreMultiTFM_ProjectReferenceWithReversedTFMs.Library.csproj");
-                public static string NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Project => GetText("NetCoreMultiTFM_ProjectReferenceWithReversedTFMs.Project.csproj");
                 public static string PortableProject => GetText("ProjectFiles.CSharp.PortableProject.csproj");
                 public static string ProjectLoadErrorOnMissingDebugType => GetText("ProjectFiles.CSharp.ProjectLoadErrorOnMissingDebugType.csproj");
                 public static string ProjectReference => GetText("ProjectFiles.CSharp.ProjectReference.csproj");
@@ -207,8 +205,6 @@ public static class CSharp
                 public static string NetCoreMultiTFM_ProjectReference_Class1 => GetText("NetCoreMultiTFM_ProjectReference.Class1.cs");
                 public static string NetCoreMultiTFM_ProjectReference_Program => GetText("NetCoreMultiTFM_ProjectReference.Program.cs");
                 public static string NetCoreMultiTFM_ProjectReferenceToFSharp_CSharpLib_Class1 = GetText("NetCoreMultiTFM_ProjectReferenceToFSharp.csharplib.Class1.cs");
-                public static string NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Class1 => GetText("NetCoreMultiTFM_ProjectReferenceWithReversedTFMs.Class1.cs");
-                public static string NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Program => GetText("NetCoreMultiTFM_ProjectReferenceWithReversedTFMs.Program.cs");
                 public static string MainWindow => GetText("SourceFiles.CSharp.MainWindow.xaml.cs");
                 public static string OtherStuff_Foo => GetText("SourceFiles.CSharp.OtherStuff_Foo.cs");
             }

src/Workspaces/MSBuildTest/WorkspaceTestBase.cs

@@ -34,13 +34,6 @@ public string GetSolutionFileName(string relativeFileName)
             return Path.Combine(this.SolutionDirectory.Path, relativeFileName);
         }
 
-        protected void CreateFiles(params string[] fileNames)
-        {
-            var fileNamesAndContent = Array.ConvertAll(fileNames, fileName => (fileName, (object)Resources.GetText(fileName)));
-            var fileSet = new FileSet(fileNamesAndContent);
-            CreateFiles(fileSet);
-        }
-
         protected void CreateFiles(IEnumerable<(string filePath, object fileContent)> fileNamesAndContent)
         {
             foreach (var (filePath, fileContent) in fileNamesAndContent)
@@ -177,18 +170,6 @@ protected static FileSet GetNetCoreMultiTFMFiles_ProjectReference()
                 (@"Library\Class1.cs", Resources.SourceFiles.CSharp.NetCoreMultiTFM_ProjectReference_Class1));
         }
 
-        protected static FileSet GetNetCoreMultiTFMFiles_ProjectReferenceWithReversedTFMs()
-        {
-            return new FileSet(
-                (@"NuGet.Config", Resources.NuGet_Config),
-                (@"Directory.Build.props", Resources.Directory_Build_props),
-                (@"Directory.Build.targets", Resources.Directory_Build_targets),
-                (@"Project\Project.csproj", Resources.ProjectFiles.CSharp.NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Project),
-                (@"Project\Program.cs", Resources.SourceFiles.CSharp.NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Program),
-                (@"Library\Library.csproj", Resources.ProjectFiles.CSharp.NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Library),
-                (@"Library\Class1.cs", Resources.SourceFiles.CSharp.NetCoreMultiTFM_ProjectReferenceWithReversedTFMs_Class1));
-        }
-
         protected static FileSet GetNetCoreMultiTFMFiles_ProjectReferenceToFSharp()
         {
             return new FileSet(