Fix restore sources

tools/restore.cmd

@@ -1,5 +1,5 @@
 @ECHO OFF
-dotnet restore %~dp0..\ --source "https://api.nuget.org/v3/index.json" --source "\\ddfiles\Team\Public\Correlation\Nugets\signed"
+dotnet restore %~dp0..\
 pushd %~dp0..
 tools\nuget.exe restore "src\Microsoft.Diagnostics.Correlation.Signing\Microsoft.Diagnostics.Correlation.Signing.csproj" -PackagesDirectory packages
 popd