Remove connected device check logic in getConnectionState

From current code, it will check if the device connected before
getConnectionState. We can remove this check logic because
HidHostService will do it.

Bug: 111812003
Test: manual - connect/disconnect HID keyborad from Settings UI
Change-Id: Ib512b3f15109b6f4cacf1f1c517b69d17ddd5ac4
1 file changed