Remove unused imports.
Turbo Mode

When we first receive a message, we put ourselves to sleep to wait for a
moment.  The reason for this is that, when things are 'calm' on the bus, we
receive messages "too fast".  A message that arrives to the badge awarder
triggers (usually) a check against datanommer to count messages.  But if we try
to count them before this message arrives at datanommer, we'll get skewed
results!  Race condition.  We go to sleep to allow ample time for datanommer to
consume this one before we go and start doing checks on it.  When fedbadges was
first released, this was absolutely necessary.

Since that time, the fedmsg bus has become much more congested.  So, to improve
our average speed at handling messages, we only do that sleep statement if
we're not already backlogged.  If we know we have a huge workload ahead of us,
then go ahead and start handling messages as fast as we can.
Merge pull request #43 from fedora-infra/feature/turbo-mode

Turbo Mode