Christian Berendt c43bd27ffe print version when removing a specific box
Example:

$ vagrant box remove --box-version 0.2.9 berendt/ubuntu-14.04-amd64
Removing box 'berendt/ubuntu-14.04-amd64' with provider 'virtualbox' in version '0.2.9'...
2014-04-11 10:05:03 +02:00
..