Fix some things in dreport

The version command for dreport doesn't do anything
and so this commit removes it.

Additionally I was having trouble with --quiet and
--verbose. After enough squinting one can see that
a different dash character was being used in the
original code, likely these never worked.

Fixes openbmc/phosphor-debug-collector#18

Change-Id: I86eb58e848790122f2c23841de3c39e18acd7d0b
Signed-off-by: Matt Fischer <matthew.fischer@hpe.com>