diff --git a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/Analyzers/SyntaxGeneratorExtensions.cs b/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/Analyzers/SyntaxGeneratorExtensions.cs
deleted file mode 100644
index 1bda8e4cc7765..0000000000000
--- a/src/libraries/System.Runtime.InteropServices/gen/LibraryImportGenerator/Analyzers/SyntaxGeneratorExtensions.cs
+++ /dev/null
@@ -1,67 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-
-using System;
-using System.Collections.Generic;
-using System.Text;
-using Microsoft.CodeAnalysis;
-using Microsoft.CodeAnalysis.Editing;
-
-namespace Microsoft.Interop.Analyzers
-{
-    internal static class SyntaxGeneratorExtensions
-    {
-        public static SyntaxNode GetEnumValueAsFlagsExpression(this SyntaxGenerator gen, ITypeSymbol enumType, object value, bool includeZeroValueFlags)
-        {
-            if (enumType.TypeKind != TypeKind.Enum)
-            {
-                throw new ArgumentException(nameof(enumType));
-            }
-
-            SpecialType underlyingType = ((INamedTypeSymbol)enumType).EnumUnderlyingType.SpecialType;
-
-            if (!underlyingType.IsIntegralType())
-            {
-                return gen.CastExpression(gen.TypeExpression(underlyingType), gen.LiteralExpression(value));
-            }
-
-            ulong valueToMatch = GetNumericValue(value);
-
-            ulong currentlyMatchedFlags = 0;
-            SyntaxNode? enumValueSyntax = null;
-            foreach (ISymbol member in enumType.GetMembers())
-            {
-                if (member is IFieldSymbol { HasConstantValue: true } enumValue)
-                {
-                    ulong fieldNumericValue = GetNumericValue(enumValue.ConstantValue);
-                    if (fieldNumericValue == 0 && !includeZeroValueFlags)
-                    {
-                        continue;
-                    }
-                    if ((fieldNumericValue & valueToMatch) == fieldNumericValue)
-                    {
-                        currentlyMatchedFlags |= fieldNumericValue;
-                        enumValueSyntax = enumValueSyntax is null
-                            ? gen.MemberAccessExpression(gen.TypeExpression(enumType), enumValue.Name)
-                            : gen.BitwiseOrExpression(enumValueSyntax, gen.MemberAccessExpression(gen.TypeExpression(enumType), enumValue.Name));
-                    }
-                }
-            }
-
-            // Unable to represent the value as the enum flags. Just use the literal value cast as the enum type.
-            if (currentlyMatchedFlags != valueToMatch)
-            {
-                return gen.CastExpression(gen.TypeExpression(underlyingType), gen.LiteralExpression(value));
-            }
-
-            return enumValueSyntax;
-
-            static ulong GetNumericValue(object value) => value switch
-            {
-                byte or ushort or uint or ulong => Convert.ToUInt64(value),
-                sbyte or short or int or long => (ulong)Convert.ToInt64(value),
-                _ => throw new UnreachableException()
-            };
-        }
-    }
-}