remove deprecated package

Author: zhiyuanliang-ms

Diff for: articles/azure-app-configuration/feature-management-dotnet-reference.md

@@ -28,7 +28,6 @@ zone_pivot_groups: feature-management
 [![Microsoft.FeatureManagement](https://img.shields.io/nuget/vpre/Microsoft.FeatureManagement?label=Microsoft.FeatureManagement)](https://www.nuget.org/packages/Microsoft.FeatureManagement/4.0.0-preview3)<br>
 [![Microsoft.FeatureManagement.AspNetCore](https://img.shields.io/nuget/vpre/Microsoft.FeatureManagement.AspNetCore?label=Microsoft.FeatureManagement.AspNetCore)](https://www.nuget.org/packages/Microsoft.FeatureManagement.AspNetCore/4.0.0-preview3)<br>
 [![Microsoft.FeatureManagement.Telemetry.ApplicationInsights](https://img.shields.io/nuget/v/Microsoft.FeatureManagement.Telemetry.ApplicationInsights?label=Microsoft.FeatureManagement.Telemetry.ApplicationInsights)](https://www.nuget.org/packages/Microsoft.FeatureManagement.Telemetry.ApplicationInsights/4.0.0-preview3)<br>
-[![Microsoft.FeatureManagement.Telemetry.ApplicationInsights.AspNetCore](https://img.shields.io/nuget/v/Microsoft.FeatureManagement.Telemetry.ApplicationInsights.AspNetCore?label=Microsoft.FeatureManagement.Telemetry.ApplicationInsights.AspNetCore)](https://www.nuget.org/packages/Microsoft.FeatureManagement.Telemetry.ApplicationInsights.AspNetCore/4.0.0-preview3)<br>
 
 :::zone-end