Remove local package source from NugetConfig

Author: woksin

NuGet.Config

@@ -3,7 +3,6 @@
   <packageSources>
     <!--To inherit the global NuGet package sources remove the <clear/> line below -->
     <clear />
-    <add key="local" value="%HOME%/packages" />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
     <add key="aspnetcore-ci-dev" value="https://dotnet.myget.org/F/aspnetcore-ci-dev/api/v3/index.json" />
   </packageSources>