[BuildMonitor] rollback to add "broken" status in common/buildservice.py

[BuildMonitor] rollback to add "broken" status in common/buildservice.py

[PROBLEM]
The 'pre-release-create' job do not trigger image-creator job

error log : **FATAL: Build not successful. Skip creating images.

[REASON]
There is a *_aggregate pkg broken issue at prerelease project (already known issue)
After applying this patch, 'broken' status is uploaded to the description of OBS
and the jenkins job checks the 'broken' and do not trigger image-creator job

The agg broken issue is already fixed at TRBS, so this patch also is applied
But at PUBLIC, it's not fixed yet. So rollback this patch

Change-Id: Ifba6fbeebff702bfedc0608acdc02ca9e42e2b39
Signed-off-by: SungHun Hwang <sh0924.hwang@samsung.com>