Remove unneeded feed from nuget.config (#37435)

Author: weshaggard

NuGet.Config

@@ -5,11 +5,6 @@
     <!-- Do not add any additional feeds if new packages are needed they need to come from nuget.org or our azure-sdk-for-net DevOps feed -->
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
     <add key="azure-sdk-for-net" value="https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-net/nuget/v3/index.json" />
-
-    <!-- 
-      Used for azure-sdk-tools repo until issue https://github.com/Azure/azure-sdk-tools/issues/1329 is addressed
-    -->
-    <add key="azure-sdk-tools" value="https://azuresdkartifacts.blob.core.windows.net/azure-sdk-tools/index.json" />
   </packageSources>
   <disabledPackageSources>
     <clear />