Remove mentions of Cirrus CI

README.md

@@ -1,4 +1,4 @@
-# Please [![Build Status](https://circleci.com/gh/thought-machine/please.svg?style=shield)](https://circleci.com/gh/thought-machine/please) [![Build Status](https://api.cirrus-ci.com/github/thought-machine/please.svg)](https://cirrus-ci.com/github/thought-machine/please) [![Go Report Card](https://goreportcard.com/badge/github.com/thought-machine/please)](https://goreportcard.com/report/github.com/thought-machine/please) [![Gitter chat](https://badges.gitter.im/thought-machine/please.png)](https://gitter.im/please-build/Lobby)
+# Please [![Build Status](https://circleci.com/gh/thought-machine/please.svg?style=shield)](https://circleci.com/gh/thought-machine/please) [![Go Report Card](https://goreportcard.com/badge/github.com/thought-machine/please)](https://goreportcard.com/report/github.com/thought-machine/please) [![Gitter chat](https://badges.gitter.im/thought-machine/please.png)](https://gitter.im/please-build/Lobby)
 
 Please is a cross-language build system with an emphasis on
 high performance, extensibility and reproducibility.

docs/cache.html

@@ -69,14 +69,7 @@ <h2 class="title-2" id="http-cache">The HTTP cache</h2>
       >webDAV</a
     >
     module.<br />
-    Alternatively some CI services (for example
-    <a
-      class="copy-link"
-      href="https://cirrus-ci.org"
-      target="_blank"
-      rel="noopener"
-      >Cirrus</a
-    >) may offer a compatible cache out of the box.
+    Alternatively some CI services may offer a compatible cache out of the box.
   </p>
 
   <p>

test/proto_plugin/BUILD

@@ -4,7 +4,6 @@ please_repo_e2e_test(
     name = "proto_rules_test",
     # the protoc releases page doesn't support these platforms
     labels = [
-        "no_cirrus",
         "no-musl",
     ],
     plz_command = "plz -o plugin.go.gotool:$TOOLS_GO test",