Default to using robot directly

The docker containers are configured to have all dependencies
installed so no need for tox. Just use robot directly.

Tested: Cherry picked this into our jenkins job and verified
all ran as expected.

Change-Id: Ie7105a1ed500fe246b01b520f3d66722e3b0739f
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
1 file changed