Update README.md

Author: RicoSuter

README.md

@@ -4,7 +4,6 @@
 
 [![Azure DevOps](https://img.shields.io/azure-devops/build/rsuter/NJsonSchema/17/master.svg)](https://rsuter.visualstudio.com/NJsonSchema/_build?definitionId=17)
 [![Nuget](https://img.shields.io/nuget/v/NJsonSchema.svg)](https://www.nuget.org/packages?q=NJsonSchema)
-[![MyGet](https://img.shields.io/myget/njsonschema/v/NJsonSchema.svg?label=preview%20nuget)](https://www.myget.org/feed/Packages/njsonschema)
 [![Discord](https://img.shields.io/badge/Discord-join%20chat-1dce73.svg)](https://discord.gg/BxQNy25WF6)
 [![StackOverflow](https://img.shields.io/badge/questions-on%20StackOverflow-orange.svg?style=flat)](http://stackoverflow.com/questions/tagged/njsonschema)
 [![Wiki](https://img.shields.io/badge/docs-in%20wiki-orange.svg?style=flat)](https://github.com/RicoSuter/njsonschema/wiki)