README: remove CII Best Practices badge link

Signed-off-by: Simon Deziel <[email protected]>

README.md

@@ -32,7 +32,6 @@ Tests               | GitHub                | [![Build Status](https://github.co
 Go documentation    | Godoc                 | [![GoDoc](https://godoc.org/github.com/canonical/lxd/client?status.svg)](https://godoc.org/github.com/canonical/lxd/client)
 Static analysis     | GoReport              | [![Go Report Card](https://goreportcard.com/badge/github.com/canonical/lxd)](https://goreportcard.com/report/github.com/canonical/lxd)
 Translations        | Weblate               | [![Translation status](https://hosted.weblate.org/widgets/linux-containers/-/svg-badge.svg)](https://hosted.weblate.org/projects/linux-containers/lxd/)
-Project status      | CII Best Practices    | [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/1086/badge)](https://bestpractices.coreinfrastructure.org/projects/1086)
 
 <!-- Include start installing -->