CEC: Remove the TODO in HdmiCecLocalDeviceSource class

Remove the TODO which states to handle routing change when multi device
type is supported. Since this method is called with their respective
local device object and it is not necessary to handle in its parent class.

Bug: 159901363
Test: None
Change-Id: I600a679efd3156981246ad033f4786c03d8a820a
1 file changed