diff --git a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/ErrorMessage.cs b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/ErrorMessage.cs
deleted file mode 100644
index f4e41aa43e..0000000000
--- a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/ErrorMessage.cs
+++ /dev/null
@@ -1,9 +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.Testing.Platform.OutputDevice.Terminal;
-
-/// <summary>
-/// An error message that was sent to output during the build.
-/// </summary>
-internal sealed record ErrorMessage(string Text) : IProgressMessage;
diff --git a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/IProgressMessage.cs b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/IProgressMessage.cs
deleted file mode 100644
index f8f331ab23..0000000000
--- a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/IProgressMessage.cs
+++ /dev/null
@@ -1,9 +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.Testing.Platform.OutputDevice.Terminal;
-
-/// <summary>
-/// Error or warning message that was sent to screen during the test run.
-/// </summary>
-internal interface IProgressMessage;
diff --git a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TerminalTestReporter.cs b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TerminalTestReporter.cs
index 98193dcde6..ee5447e5fb 100644
--- a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TerminalTestReporter.cs
+++ b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TerminalTestReporter.cs
@@ -791,18 +791,10 @@ public void StartCancelling()
     }
 
     internal void WriteErrorMessage(string text, int? padding)
-    {
-        TestProgressState asm = GetOrAddAssemblyRun();
-        asm.AddError(text);
-        WriteMessage(text, TerminalColor.DarkRed, padding);
-    }
+        => WriteMessage(text, TerminalColor.DarkRed, padding);
 
     internal void WriteWarningMessage(string text, int? padding)
-    {
-        TestProgressState asm = GetOrAddAssemblyRun();
-        asm.AddWarning(text);
-        WriteMessage(text, TerminalColor.DarkYellow, padding);
-    }
+        => WriteMessage(text, TerminalColor.DarkYellow, padding);
 
     internal void WriteErrorMessage(Exception exception)
         => WriteErrorMessage(exception.ToString(), padding: null);
diff --git a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TestProgressState.cs b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TestProgressState.cs
index c792c8beee..b962b40848 100644
--- a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TestProgressState.cs
+++ b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/TestProgressState.cs
@@ -10,7 +10,6 @@ internal sealed class TestProgressState
     public TestProgressState(long id, string assembly, string? targetFramework, string? architecture, IStopwatch stopwatch, bool isDiscovery)
     {
         Id = id;
-        Assembly = assembly;
         TargetFramework = targetFramework;
         Architecture = architecture;
         Stopwatch = stopwatch;
@@ -18,8 +17,6 @@ public TestProgressState(long id, string assembly, string? targetFramework, stri
         IsDiscovery = isDiscovery;
     }
 
-    public string Assembly { get; }
-
     public string AssemblyName { get; }
 
     public string? TargetFramework { get; }
@@ -30,8 +27,6 @@ public TestProgressState(long id, string assembly, string? targetFramework, stri
 
     public int DiscoveredTests { get; internal set; }
 
-    public List<IProgressMessage> Messages { get; } = [];
-
     public int FailedTests { get; internal set; }
 
     public int PassedTests { get; internal set; }
@@ -51,10 +46,4 @@ public TestProgressState(long id, string assembly, string? targetFramework, stri
     public List<string> DiscoveredTestDisplayNames { get; internal set; } = [];
 
     public bool IsDiscovery { get; }
-
-    internal void AddError(string text)
-        => Messages.Add(new ErrorMessage(text));
-
-    internal void AddWarning(string text)
-        => Messages.Add(new WarningMessage(text));
 }
diff --git a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/WarningMessage.cs b/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/WarningMessage.cs
deleted file mode 100644
index c938898aa7..0000000000
--- a/src/Platform/Microsoft.Testing.Platform/OutputDevice/Terminal/WarningMessage.cs
+++ /dev/null
@@ -1,9 +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.Testing.Platform.OutputDevice.Terminal;
-
-/// <summary>
-/// A warning message that was sent during run.
-/// </summary>
-internal sealed record WarningMessage(string Text) : IProgressMessage;