[nancy] remove last reference to graphene cluster

4 jobs for graphene in 1 minute and 36 seconds
Status Job ID Name Coverage
  Validate
passed #285679
grid5000-docker
rubocop

00:00:29

passed #285680
grid5000-docker
validate-data

00:00:54

 
  Generate
passed #285681
grid5000-docker
generate-reference-api

00:00:33

 
  Deploy
passed #285682
grid5000-shell
deploy

00:00:08