diff --git a/src/Adapter/MSTest.Engine/Helpers/TestFrameworkConstants.cs b/src/Adapter/MSTest.Engine/Helpers/TestFrameworkConstants.cs
index 6523d05f7f..1ff235fcb4 100644
--- a/src/Adapter/MSTest.Engine/Helpers/TestFrameworkConstants.cs
+++ b/src/Adapter/MSTest.Engine/Helpers/TestFrameworkConstants.cs
@@ -6,5 +6,4 @@ namespace Microsoft.Testing.Framework;
 internal static class TestFrameworkConstants
 {
     public const string DefaultSemVer = MSTestEngineRepositoryVersion.Version;
-    public const string TestAdapterExecutorUri = "executor://testing-framework";
 }
diff --git a/src/Adapter/MSTest.Engine/TimeSheet.cs b/src/Adapter/MSTest.Engine/TimeSheet.cs
index db5fb84217..e026329f66 100644
--- a/src/Adapter/MSTest.Engine/TimeSheet.cs
+++ b/src/Adapter/MSTest.Engine/TimeSheet.cs
@@ -33,11 +33,6 @@ public TimeSheet(IClock clock)
     /// </summary>
     public DateTimeOffset StopTime { get; private set; }
 
-    /// <summary>
-    /// Gets how long we've spent in queue before being executed. Precise, measured by Stopwatch.
-    /// </summary>
-    public TimeSpan DurationInQueue { get; private set; }
-
     /// <summary>
     /// Gets how long we've spent executing the test. Precise, measured by Stopwatch.
     /// </summary>
@@ -49,7 +44,6 @@ public TimeSheet(IClock clock)
     internal void RecordStart()
     {
         StartTime = _clock.UtcNow;
-        DurationInQueue = _stopwatch.Elapsed;
         _stopwatch.Restart();
     }
 
diff --git a/src/Platform/Microsoft.Testing.Extensions.VSTestBridge/Helpers/VSTestTestNodeProperties.cs b/src/Platform/Microsoft.Testing.Extensions.VSTestBridge/Helpers/VSTestTestNodeProperties.cs
index 9a7d6b2daa..f64763a55e 100644
--- a/src/Platform/Microsoft.Testing.Extensions.VSTestBridge/Helpers/VSTestTestNodeProperties.cs
+++ b/src/Platform/Microsoft.Testing.Extensions.VSTestBridge/Helpers/VSTestTestNodeProperties.cs
@@ -5,11 +5,5 @@ namespace Microsoft.Testing.Extensions.VSTestBridge;
 
 internal static class VSTestTestNodeProperties
 {
-    internal const string Prefix = "vstest.";
     public const string OriginalExecutorUriPropertyName = "vstest.original-executor-uri";
-
-    public static class TestNode
-    {
-        public const string UidPropertyName = "vstest.testnode.uid";
-    }
 }
diff --git a/src/Platform/Microsoft.Testing.Platform/ServerMode/JsonRpc/Json/JsonExtensions.cs b/src/Platform/Microsoft.Testing.Platform/ServerMode/JsonRpc/Json/JsonExtensions.cs
deleted file mode 100644
index 1e0792308f..0000000000
--- a/src/Platform/Microsoft.Testing.Platform/ServerMode/JsonRpc/Json/JsonExtensions.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
-// Licensed under the MIT license. See LICENSE file in the project root for full license information.
-
-using System.Text.Json;
-
-namespace Microsoft.Testing.Platform.ServerMode.Json;
-
-internal static class JsonExtensions
-{
-    public static IEnumerable<JsonProperty> AllExcept(this JsonElement element, params string[] properties)
-        => element.EnumerateObject().Where(p => !properties.Any(n => p.NameEquals(n)));
-}
diff --git a/src/TestFramework/TestFramework/FrameworkConstants.cs b/src/TestFramework/TestFramework/FrameworkConstants.cs
index 4e7d3e2418..e640cf2a59 100644
--- a/src/TestFramework/TestFramework/FrameworkConstants.cs
+++ b/src/TestFramework/TestFramework/FrameworkConstants.cs
@@ -14,5 +14,4 @@ internal static class FrameworkConstants
     internal const string DoNotUseStringAssertReferenceEquals = "StringAssert.ReferenceEquals should not be used for Assertions. Please use StringAssert methods or Assert.AreSame & overloads instead.";
     internal const string DoNotUseCollectionAssertEquals = "CollectionAssert.Equals should not be used for Assertions. Please use CollectionAssert.AreEqual & overloads instead.";
     internal const string DoNotUseCollectionAssertReferenceEquals = "CollectionAssert.ReferenceEquals should not be used for Assertions. Please use CollectionAssert methods or Assert.AreSame & overloads instead.";
-    internal const string TestTimeoutAttributeObsoleteMessage = "The 'TestTimeout' attribute is obsolete and will be removed in v4. Consider removing the 'Timeout' attribute or use the 'Timeout' attribute with the 'int.MaxValue' for infinite timeout.";
 }
diff --git a/src/TestFramework/TestFramework/Internal/UtfHelper.cs b/src/TestFramework/TestFramework/Internal/UtfHelper.cs
deleted file mode 100644
index 63356e0cb7..0000000000
--- a/src/TestFramework/TestFramework/Internal/UtfHelper.cs
+++ /dev/null
@@ -1,66 +0,0 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
-// Licensed under the MIT license. See LICENSE file in the project root for full license information.
-
-namespace Microsoft.VisualStudio.TestTools.UnitTesting;
-
-/// <summary>
-/// Provides helper functionality for the unit test framework.
-/// </summary>
-[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Requirement is to handle all kinds of user exceptions and message appropriately.")]
-internal static class UtfHelper
-{
-    /// <summary>
-    /// Gets the exception messages, including the messages for all inner exceptions
-    /// recursively.
-    /// </summary>
-    /// <param name="ex">Exception to get messages for.</param>
-    /// <returns>string with error message information.</returns>
-    internal static string GetExceptionMsg(Exception ex)
-    {
-        DebugEx.Assert(ex != null, "exception is null");
-
-        StringBuilder result = new();
-        bool first = true;
-        for (Exception? curException = ex;
-             curException != null;
-             curException = curException.InnerException)
-        {
-            // Get the exception message. Need to check for errors because the Message property
-            // may have been overridden by the exception type in user code.
-            string msg;
-            Type type = curException.GetType();
-            try
-            {
-                msg = curException.Message;
-            }
-            catch
-            {
-                msg = string.Format(
-                    CultureInfo.CurrentCulture,
-                    FrameworkMessages.UTF_FailedToGetExceptionMessage,
-                    type);
-            }
-
-            if (first)
-            {
-                result.AppendFormat(
-                    CultureInfo.CurrentCulture,
-                    "{0}: {1}",
-                    type,
-                    msg);
-            }
-            else
-            {
-                result.AppendFormat(
-                    CultureInfo.CurrentCulture,
-                    " ---> {0}: {1}",
-                    type,
-                    msg);
-            }
-
-            first = false;
-        }
-
-        return result.ToString();
-    }
-}