diff --git a/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/Microsoft.Bcl.AsyncInterfaces.1.0.0.csproj b/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/Microsoft.Bcl.AsyncInterfaces.1.0.0.csproj
deleted file mode 100644
index 21e82057e8..0000000000
--- a/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/Microsoft.Bcl.AsyncInterfaces.1.0.0.csproj
+++ /dev/null
@@ -1,17 +0,0 @@
-
-
-
- netstandard2.0;netstandard2.1
- Microsoft.Bcl.AsyncInterfaces
- Open
-
-
-
-
-
-
-
-
-
-
-
diff --git a/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/microsoft.bcl.asyncinterfaces.nuspec b/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/microsoft.bcl.asyncinterfaces.nuspec
deleted file mode 100644
index 40d753f210..0000000000
--- a/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/microsoft.bcl.asyncinterfaces.nuspec
+++ /dev/null
@@ -1,33 +0,0 @@
-
-
-
- Microsoft.Bcl.AsyncInterfaces
- 1.0.0
- Microsoft.Bcl.AsyncInterfaces
- Microsoft
- microsoft,dotnetframework
- false
- https://github.com/dotnet/corefx/blob/master/LICENSE.TXT
- https://github.com/dotnet/corefx
- http://go.microsoft.com/fwlink/?LinkID=288859
- Provides the IAsyncEnumerable<T> and IAsyncDisposable interfaces and helper types for .NET Standard 2.0. This package is not required starting with .NET Standard 2.1 and .NET Core 3.0.
-
-Commonly Used Types:
-System.IAsyncDisposable
-System.Collections.Generic.IAsyncEnumerable
-System.Collections.Generic.IAsyncEnumerator
-
-When using NuGet 3.x this package requires at least version 3.4.
- https://go.microsoft.com/fwlink/?LinkID=799421
- © Microsoft Corporation. All rights reserved.
- true
-
-
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/ref/netstandard2.0/Microsoft.Bcl.AsyncInterfaces.cs b/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/ref/netstandard2.0/Microsoft.Bcl.AsyncInterfaces.cs
deleted file mode 100644
index 24d9590425..0000000000
--- a/src/referencePackages/src/microsoft.bcl.asyncinterfaces/1.0.0/ref/netstandard2.0/Microsoft.Bcl.AsyncInterfaces.cs
+++ /dev/null
@@ -1,144 +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.
-// ------------------------------------------------------------------------------
-// Changes to this file must follow the http://aka.ms/api-review process.
-// ------------------------------------------------------------------------------
-[assembly: System.Runtime.CompilerServices.CompilationRelaxations(8)]
-[assembly: System.Runtime.CompilerServices.RuntimeCompatibility(WrapNonExceptionThrows = true)]
-[assembly: System.Diagnostics.Debuggable(System.Diagnostics.DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
-[assembly: System.Reflection.AssemblyDefaultAlias("Microsoft.Bcl.AsyncInterfaces")]
-[assembly: System.Reflection.AssemblyMetadata(".NETFrameworkAssembly", "")]
-[assembly: System.Reflection.AssemblyMetadata("Serviceable", "True")]
-[assembly: System.Reflection.AssemblyMetadata("PreferInbox", "True")]
-[assembly: System.Reflection.AssemblyCompany("Microsoft Corporation")]
-[assembly: System.Reflection.AssemblyCopyright("© Microsoft Corporation. All rights reserved.")]
-[assembly: System.Reflection.AssemblyDescription("Microsoft.Bcl.AsyncInterfaces")]
-[assembly: System.Reflection.AssemblyFileVersion("4.700.19.46214")]
-[assembly: System.Reflection.AssemblyInformationalVersion("3.0.0+4ac4c0367003fe3973a3648eb0715ddb0e3bbcea")]
-[assembly: System.Reflection.AssemblyProduct("Microsoft® .NET Core")]
-[assembly: System.Reflection.AssemblyTitle("Microsoft.Bcl.AsyncInterfaces")]
-[assembly: System.Runtime.CompilerServices.ReferenceAssembly]
-[assembly: System.CLSCompliant(true)]
-[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyFlagsAttribute((System.Reflection.AssemblyNameFlags)0x70)]
-namespace System
-{
- public partial interface IAsyncDisposable
- {
- Threading.Tasks.ValueTask DisposeAsync();
- }
-}
-
-namespace System.Collections.Generic
-{
- public partial interface IAsyncEnumerable
- {
- IAsyncEnumerator GetAsyncEnumerator(Threading.CancellationToken cancellationToken = default);
- }
-
- public partial interface IAsyncEnumerator : IAsyncDisposable
- {
- T Current { get; }
-
- Threading.Tasks.ValueTask MoveNextAsync();
- }
-}
-
-namespace System.Runtime.CompilerServices
-{
- public partial struct AsyncIteratorMethodBuilder
- {
- private object _dummy;
- private int _dummyPrimitive;
- public void AwaitOnCompleted(ref TAwaiter awaiter, ref TStateMachine stateMachine)
- where TAwaiter : INotifyCompletion where TStateMachine : IAsyncStateMachine { }
-
- public void AwaitUnsafeOnCompleted(ref TAwaiter awaiter, ref TStateMachine stateMachine)
- where TAwaiter : ICriticalNotifyCompletion where TStateMachine : IAsyncStateMachine { }
-
- public void Complete() { }
-
- public static AsyncIteratorMethodBuilder Create() { throw null; }
-
- public void MoveNext(ref TStateMachine stateMachine)
- where TStateMachine : IAsyncStateMachine { }
- }
-
- [AttributeUsage(AttributeTargets.Method, Inherited = false, AllowMultiple = false)]
- public sealed partial class AsyncIteratorStateMachineAttribute : StateMachineAttribute
- {
- public AsyncIteratorStateMachineAttribute(Type stateMachineType) : base(default!) { }
- }
-
- public readonly partial struct ConfiguredAsyncDisposable
- {
- private readonly object _dummy;
- private readonly int _dummyPrimitive;
- public readonly ConfiguredValueTaskAwaitable DisposeAsync() { throw null; }
- }
-
- public readonly partial struct ConfiguredCancelableAsyncEnumerable
- {
- private readonly object _dummy;
- private readonly int _dummyPrimitive;
- public readonly ConfiguredCancelableAsyncEnumerable ConfigureAwait(bool continueOnCapturedContext) { throw null; }
-
- public readonly ConfiguredCancelableAsyncEnumerable.Enumerator GetAsyncEnumerator() { throw null; }
-
- public readonly ConfiguredCancelableAsyncEnumerable WithCancellation(Threading.CancellationToken cancellationToken) { throw null; }
-
- public readonly partial struct Enumerator
- {
- private readonly object _dummy;
- private readonly int _dummyPrimitive;
- public T Current { get { throw null; } }
-
- public readonly ConfiguredValueTaskAwaitable DisposeAsync() { throw null; }
-
- public readonly ConfiguredValueTaskAwaitable MoveNextAsync() { throw null; }
- }
- }
-
- [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
- public sealed partial class EnumeratorCancellationAttribute : Attribute
- {
- }
-}
-
-namespace System.Threading.Tasks
-{
- public static partial class TaskAsyncEnumerableExtensions
- {
- public static Runtime.CompilerServices.ConfiguredAsyncDisposable ConfigureAwait(this IAsyncDisposable source, bool continueOnCapturedContext) { throw null; }
-
- public static Runtime.CompilerServices.ConfiguredCancelableAsyncEnumerable ConfigureAwait(this Collections.Generic.IAsyncEnumerable source, bool continueOnCapturedContext) { throw null; }
-
- public static Runtime.CompilerServices.ConfiguredCancelableAsyncEnumerable WithCancellation(this Collections.Generic.IAsyncEnumerable source, CancellationToken cancellationToken) { throw null; }
- }
-}
-
-namespace System.Threading.Tasks.Sources
-{
- public partial struct ManualResetValueTaskSourceCore
- {
- private TResult _result;
- private object _dummy;
- private int _dummyPrimitive;
- public bool RunContinuationsAsynchronously { get { throw null; } set { } }
-
- public short Version { get { throw null; } }
-
- public TResult GetResult(short token) { throw null; }
-
- public ValueTaskSourceStatus GetStatus(short token) { throw null; }
-
- public void OnCompleted(Action