Remove unused PermissionBackend in DeleteRefCommand

Remove the injection of PermissionBackend in DeleteRefCommand
and the associated test because it was competely unused.

Change-Id: I139bfe1398b8f05ab7768895f791c61b763e2853
2 files changed
tree: 66ec29d27d16239e4677989584fcf3a3b4814caf
  1. example-setup/
  2. src/
  3. .gitignore
  4. BUILD
  5. Jenkinsfile
  6. LICENSE