Remove BT routes when BT is turned off

A behavior change in the BT stack caused it to stop sending connection
changes for connected devices when you turn BT off. To work around this
we need to remove the connected BT route when BT is turned off.

bug:17512270
Change-Id: I3e5aa8863409c5abac51aa4e93a15f1978cf74b3
1 file changed