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

services/core/java/com/android/server/hdmi/HdmiCecLocalDeviceSource.java

@@ -201,7 +201,6 @@ abstract class HdmiCecLocalDeviceSource extends HdmiCecLocalDevice {
 
     // Only source devices that react to routing control messages should implement
     // this method (e.g. a TV with built in switch).
-    // TODO(): decide which type will handle the routing when multi device type is supported
     protected void handleRoutingChangeAndInformation(int physicalAddress, HdmiCecMessage message) {
         // do nothing
     }