Merge master

Author: nohwnd

NuGet.config

@@ -14,8 +14,6 @@
     <add key="mstest.myget" value="https://dotnet.myget.org/F/mstestv2/api/v3/index.json" />
     <add key="pdb2pdb.myget" value="https://dotnet.myget.org/F/symreader-converter/api/v3/index.json" />
     <add key="vsunittesting.myget" value="https://dotnet.myget.org/F/vsunittesting/api/v3/index.json" />
-    <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
-    <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
   </packageSources>
   <fallbackPackageFolders>
     <clear />