Update README.md

Author: marcusolsson

README.md

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 # JSON API data source for Grafana
 
-[![License](https://img.shields.io/github/license/marcusolsson/grafana-json-datasource)](LICENSE)
-[![PRs welcome!](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](#contribute)
 [![Build](https://github.com/marcusolsson/grafana-json-datasource/workflows/CI/badge.svg)](https://github.com/marcusolsson/grafana-json-datasource/actions?query=workflow%3A%22CI%22)
 [![Release](https://github.com/marcusolsson/grafana-json-datasource/workflows/Release/badge.svg)](https://github.com/marcusolsson/grafana-json-datasource/actions?query=workflow%3ARelease)
 [![Marketplace](https://img.shields.io/badge/dynamic/json?color=orange&label=marketplace&prefix=v&query=%24.items%5B%3F%28%40.slug%20%3D%3D%20%22marcusolsson-json-datasource%22%29%5D.version&url=https%3A%2F%2Fgrafana.com%2Fapi%2Fplugins)](https://grafana.com/grafana/plugins/marcusolsson-json-datasource)
 [![Downloads](https://img.shields.io/badge/dynamic/json?color=orange&label=downloads&query=%24.items%5B%3F%28%40.slug%20%3D%3D%20%22marcusolsson-json-datasource%22%29%5D.downloads&url=https%3A%2F%2Fgrafana.com%2Fapi%2Fplugins)](https://grafana.com/grafana/plugins/marcusolsson-json-datasource)
+[![License](https://img.shields.io/github/license/marcusolsson/grafana-json-datasource)](LICENSE)
 
 A data source plugin for loading JSON APIs into [Grafana](https://grafana.com).