Remove CircleCI tasks (#427)

Author: vearutop

.circleci/config.yml

@@ -1,4 +1,4 @@
-[![CircleCI](https://circleci.com/gh/cucumber/godog/tree/master.svg?style=svg)](https://circleci.com/gh/cucumber/godog/tree/master)
+[![Build Status](https://github.com/cucumber/godog/workflows/test/badge.svg)](https://github.com/cucumber/godog/actions?query=branch%main+workflow%3Atest)
 [![PkgGoDev](https://pkg.go.dev/badge/github.com/cucumber/godog)](https://pkg.go.dev/github.com/cucumber/godog)
 [![codecov](https://codecov.io/gh/cucumber/godog/branch/master/graph/badge.svg)](https://codecov.io/gh/cucumber/godog)
 [![pull requests](https://oselvar.com/api/badge?label=pull%20requests&csvUrl=https%3A%2F%2Fraw.githubusercontent.com%2Fcucumber%2Foselvar-github-metrics%2Fmain%2Fdata%2Fcucumber%2Fgodog%2FpullRequests.csv)](https://oselvar.com/github/cucumber/oselvar-github-metrics/main/cucumber/godog)