Bluetooth : fix UI bug while an opp object tranfer is ongoing

- While an opp object is transferring ,there is a white border line on the left side of the progress-bar
  ,which is shown when user click down the notification bar.
- remove the background flag

Change-Id: I4786af460cdd50a9b853f4fa16a12214f4390952
Signed-off-by: jhtop.kim <jhtop.kim@samsung.com>