Bluetooth: Change typos in calls to remove D-Bus filter rules

During Bluetooth eventloop teardown, the strings used in calls to remove the
D-Bus filter rules were incorrect. This leaves rules assigned to the connection,
and eventually the maximum number of rules are exceeded preventing Bluetooth
from being enabled.

Change-Id: I406345a510677ee34b4c67fffbb685b184b6b7fe
CRs-fixed: 235360