Remove unintended nuget.config changes

Co-authored-by: adityapatwardhan <12820925+adityapatwardhan@users.noreply.github.com>

Author: Copilot

nuget.config

@@ -2,7 +2,6 @@
 <configuration>
   <packageSources>
     <clear />
-    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
     <add key="PowerShellCore_PublicPackages" value="https://pkgs.dev.azure.com/powershell/PowerShell/_packaging/powershell/nuget/v3/index.json" />
   </packageSources>
   <disabledPackageSources>