Update Microsoft.Identity.Client.csproj

Author: trwalke

src/client/Microsoft.Identity.Client/Microsoft.Identity.Client.csproj

@@ -87,10 +87,8 @@
     <Compile Include="$(PathToMsalSources)\**\*.cs" Exclude="$(PathToMsalSources)\obj\**\*.*" />
     <Compile Remove="$(PathToMsalSources)\Platforms\**\*.*;$(PathToMsalSources)\Resources\*.cs" />
     <Compile Remove="$(PathToMsalSources)\PlatformsCommon\PlatformNotSupported\ApiConfig\SystemWebViewOptions.cs" />
-    <Compile Include="Extensibility\MsalAuthenticationExtension.cs" />
     <EmbeddedResource Include="$(PathToMsalSources)\Properties\Microsoft.Identity.Client.rd.xml" />
     <None Include="$(PathToMsalSources)\..\..\..\README.md" Pack="true" PackagePath="\" />
-    <None Include="Extensibility\MsalAuthenticationExtension.cs" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == '$(TargetFrameworkNetStandard)'">