This patch set removes the impacted CLI command for
the following reasons:
1) it currently isn't being used by anyone or any automation
2) it's not clear how to use it
3) making it work with git diff or git show in order to determine
changed files automatically is sleaker design but currently
there is no use case for this command
Associated engine code, CLI documentation and helper functionality
only associated with this command are dropped.
Change-Id: Ic09951e988b82a386d2a1a7b9ce9d77f78bd00d7
40c12b417e