This CL before, the bt device still showing on
"previously connected devices" after forgot that bt device.
It because the list of getMostRecentlyConnectedDevices()
will not include BOND_NONE device. We need to remove the
device that not include in list of getMostRecentlyConnectedDevices() .
This CL add removePreferenceIfNecessary() to check the device whether
is contained in getMostRecentlyConnectedDevices(). If not, remove the
preference.
Bug: 149193092
Test: make -j42 RunSettingsRoboTests
Change-Id: I94bedf222b64d9f05dc6f979b79dbc8794c0f97d
76dcfdedf2