am ef2f55d0: Add support to delete AVD in the new AvdSelector.

Merge commit 'ef2f55d0b70edcddeeeac7ad7cab0c8f115c0800'

* commit 'ef2f55d0b70edcddeeeac7ad7cab0c8f115c0800':
  Add support to delete AVD in the new AvdSelector.