This patch removes default value for logger passed to
faked BrokerClass in some unit tests for account reaper,
to make sure that a logger instance is properly passed
when generation BrokerClass instance.
This patch also removes unnecessory parameter, which is
added to confirm logger passed to broker, but is not
useful in fact.
NOTE: This patch is a follow-up of my previous commit[1]
[1] https://review.opendev.org/#/c/295875/
Change-Id: Ica10e3ac42375c2dc141478e647408df90028ae9
211cf3983c