Update README.md

Author: stan-osipov

README.md

@@ -1,6 +1,5 @@
 # Internal Plugins dev kit
 
 [![NPM Package](https://img.shields.io/npm/v/com.stansassets.plugins-dev-kit)](https://www.npmjs.com/package/com.stansassets.plugins-dev-kit)
-[![openupm](https://img.shields.io/npm/v/com.stansassets.plugins-dev-kit?label=openupm&registry_uri=https://package.openupm.com)](https://openupm.com/packages/com.stansassets.plugins-dev-kit/)
 [![Licence](https://img.shields.io/npm/l/com.stansassets.plugins-dev-kit)](https://github.com/StansAssets/com.stansassets.plugins-dev-kit/blob/master/LICENSE)
 [![Issues](https://img.shields.io/github/issues/StansAssets/com.stansassets.plugins-dev-kit)](https://github.com/StansAssets/com.stansassets.plugins-dev-kit/issues)