merge revision(s) 15ee9c7c1b693f29b6b2dbe7b47488bf154e481c:
[DOC] README.md: Remove Cirrus CI badge image. (#8785) We removed the `.cirrus.yml` at the commit <01b5d1d2ff6ca91b2909dfa67295f59b53e6f065>. Let's remove the badge image too.
merge revision(s) 15ee9c7c1b693f29b6b2dbe7b47488bf154e481c: