Fix incorrect UI issue of "previously connected devices"

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