Remove some almost-duplicate COMMAND definitions

These seem to have been added twice in 8985e1c9e and
then in 7b42deef3.  The second version looks more
correct.

Signed-off-by: John Spray <john.spray@inktank.com>
Merge pull request #1115 from jcsp/tell_cleanup

Remove some almost-duplicate COMMAND definitions

Reviewed-by: Loic Dachary <loic@dachary.org>