delete tfm constants

src/installer/tests/HostActivation.Tests/FrameworkResolution/MultipleHives.cs

@@ -61,7 +61,7 @@ public void FrameworkHiveSelection_CurrentDirectoryIsIgnored()
         {
             RunTest(new TestSettings()
                     .WithRuntimeConfigCustomizer(runtimeConfig => runtimeConfig
-                        .WithTfm(Constants.Tfm.Net6)
+                        .WithTfm("net6.0")
                         .WithFramework(MicrosoftNETCoreApp, "5.0.0"))
                     .WithWorkingDirectory(SharedState.DotNetCurrentHive.BinPath),
                 multiLevelLookup: true)

src/installer/tests/TestUtils/Constants.cs

@@ -33,14 +33,6 @@ public static class RollForwardSetting
             public const string Disable = "Disable";
         }
 
-        public static class Tfm
-        {
-            public const string RuntimeConfigPropertyName = "tfm";
-            public const string Net6 = "net6.0";
-            public const string Net7 = "net7.0";
-            public const string Net8 = "net8.0";
-        }
-
         public static class FxVersion
         {
             public const string CommandLineArgument = "--fx-version";

src/installer/tests/TestUtils/RuntimeConfig.cs

@@ -279,9 +279,7 @@ public void Save()
 
             if (_tfm is not null)
             {
-                runtimeOptions.Add(
-                    Constants.Tfm.RuntimeConfigPropertyName,
-                    _tfm);
+                runtimeOptions.Add("tfm", _tfm);
             }
 
             if (_properties.Count > 0)

src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/ApplicationDeployer.cs

@@ -61,7 +61,7 @@ private void ValidateParameters()
 
         private RuntimeFlavor GetRuntimeFlavor(string tfm)
         {
-            if (Tfm.Matches(Tfm.Net462, tfm))
+            if (tfm.ToLowerInvariant() == "net462")
             {
                 return RuntimeFlavor.Clr;
             }

src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/IntegrationTesting/src/Deployers/SelfHostDeployer.cs

@@ -83,8 +83,9 @@ protected async Task<CancellationToken> StartSelfHostAsync()
                 {
                     // Core+Standalone always publishes. This must be Clr+Standalone or Core+Portable.
                     // Run from the pre-built bin/{config}/{tfm} directory.
+                    Version version = Environment.Version;
                     var targetFramework = DeploymentParameters.TargetFramework
-                        ?? (DeploymentParameters.RuntimeFlavor == RuntimeFlavor.Clr ? Tfm.Net462 : Tfm.NetCoreApp22);
+                        ?? (DeploymentParameters.RuntimeFlavor == RuntimeFlavor.Clr ? "net462" : $"net{version.Major}.{version.Minor}");
                     workingDirectory = Path.Combine(DeploymentParameters.ApplicationPath, "bin", DeploymentParameters.Configuration, targetFramework);
                     // CurrentDirectory will point to bin/{config}/{tfm}, but the config and static files aren't copied, point to the app base instead.
                     DeploymentParameters.EnvironmentVariables["DOTNET_CONTENTROOT"] = DeploymentParameters.ApplicationPath;

src/libraries/Microsoft.Extensions.Hosting/tests/FunctionalTests/ShutdownTests.cs

@@ -58,12 +58,13 @@ private async Task ExecuteShutdownTest(string testName, string shutdownMechanic)
             var applicationPath = string.Empty; // disabled for now
 #pragma warning restore 0618
 
+            Version version = Environment.Version;
             var deploymentParameters = new DeploymentParameters(
                 applicationPath,
                 RuntimeFlavor.CoreClr,
                 RuntimeArchitecture.x64)
             {
-                TargetFramework = Tfm.NetCoreApp50,
+                TargetFramework = $"Environment{version.Major}.{version.Minor}",
                 ApplicationType = ApplicationType.Portable,
                 PublishApplicationBeforeDeployment = true,
                 StatusMessagesEnabled = false