Drop buildkite

README.md

@@ -3,7 +3,6 @@
 <!-- badges: start -->
 [![Project Status: Concept – Minimal or no implementation has been done yet, or the repository is only intended to be a limited example, demo, or proof-of-concept.](https://www.repostatus.org/badges/latest/concept.svg)](https://www.repostatus.org/#concept)
 [![R build status](https://github.com/mrc-ide/orderly.helper/workflows/R-CMD-check/badge.svg)](https://github.com/mrc-ide/orderly.helper/actions)
-[![Build status]()](https://buildkite.com/mrc-ide/mrcide/orderly-dot-helper?branch=main)
 [![codecov.io](https://codecov.io/github/mrc-ide/orderly.helper/coverage.svg?branch=main)](https://codecov.io/github/mrc-ide/orderly.helper?branch=main)
 <!-- badges: end -->