diff --git a/src/Tools/ExternalAccess/FSharp/Diagnostics/IFSharpProjectDiagnosticAnalyzer.cs b/src/Tools/ExternalAccess/FSharp/Diagnostics/IFSharpProjectDiagnosticAnalyzer.cs
deleted file mode 100644
index 45803c59c6e0b8d00823f3edc3b8c9463bfd29c6..0000000000000000000000000000000000000000
--- a/src/Tools/ExternalAccess/FSharp/Diagnostics/IFSharpProjectDiagnosticAnalyzer.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-using System.Collections.Immutable;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace Microsoft.CodeAnalysis.ExternalAccess.FSharp.Diagnostics
-{
-    internal interface IFSharpProjectDiagnosticAnalyzer
-    {
-        Task<ImmutableArray<Diagnostic>> AnalyzeProjectAsync(Project project, CancellationToken cancellationToken);
-    }
-}
diff --git a/src/Tools/ExternalAccess/FSharp/Internal/Diagnostics/FSharpProjectDiagnosticAnalyzer.cs b/src/Tools/ExternalAccess/FSharp/Internal/Diagnostics/FSharpProjectDiagnosticAnalyzer.cs
deleted file mode 100644
index 64fdff8c9b0ae66fa83d963856660502a52284ac..0000000000000000000000000000000000000000
--- a/src/Tools/ExternalAccess/FSharp/Internal/Diagnostics/FSharpProjectDiagnosticAnalyzer.cs
+++ /dev/null
@@ -1,59 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-using System;
-using System.Collections.Immutable;
-using System.Composition;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.CodeAnalysis.Diagnostics;
-using Microsoft.CodeAnalysis.ExternalAccess.FSharp.Diagnostics;
-using Microsoft.CodeAnalysis.Host;
-using Microsoft.CodeAnalysis.Host.Mef;
-
-namespace Microsoft.CodeAnalysis.ExternalAccess.FSharp.Internal.Diagnostics
-{
-    [Shared]
-    [ExportLanguageService(typeof(FSharpProjectDiagnosticAnalyzerService), LanguageNames.FSharp)]
-    internal class FSharpProjectDiagnosticAnalyzerService : ILanguageService
-    {
-        private readonly IFSharpProjectDiagnosticAnalyzer _analyzer;
-
-        [ImportingConstructor]
-        [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
-        public FSharpProjectDiagnosticAnalyzerService(IFSharpProjectDiagnosticAnalyzer analyzer)
-        {
-            _analyzer = analyzer;
-        }
-
-        public Task<ImmutableArray<Diagnostic>> AnalyzeProjectAsync(Project project, CancellationToken cancellationToken)
-        {
-            return _analyzer.AnalyzeProjectAsync(project, cancellationToken);
-        }
-    }
-
-    [DiagnosticAnalyzer(LanguageNames.FSharp)]
-    internal class FSharpProjectDiagnosticAnalyzer : ProjectDiagnosticAnalyzer
-    {
-        private readonly ImmutableArray<DiagnosticDescriptor> _supportedDiagnostics;
-
-        public FSharpProjectDiagnosticAnalyzer()
-        {
-            _supportedDiagnostics = FSharpDocumentDiagnosticAnalyzer.CreateSupportedDiagnostics();
-        }
-
-        public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => _supportedDiagnostics;
-
-        public override Task<ImmutableArray<Diagnostic>> AnalyzeProjectAsync(Project project, CancellationToken cancellationToken)
-        {
-            var analyzer = project.LanguageServices.GetService<FSharpProjectDiagnosticAnalyzerService>();
-            if (analyzer == null)
-            {
-                return Task.FromResult(ImmutableArray<Diagnostic>.Empty);
-            }
-
-            return analyzer.AnalyzeProjectAsync(project, cancellationToken);
-        }
-    }
-}