Ensure Internal.AspNetCore.Sdk does not end up in the LZMA (#4448)

Author: natemcmaster

src/PackageArchive/Directory.Build.props

@@ -1,5 +1,10 @@
 <Project>
   <Import Project="..\..\Directory.Build.props" />
+  
+  <ItemGroup>
+    <!-- Ensure we are only putting packages in the package cache that are explicitly listed -->
+    <PackageReference Remove="@(PackageReference)" />
+  </ItemGroup>
 
   <PropertyGroup>
     <!-- Don't restore from any fallback folder -->