update TODOs

- assign bugs for future items
- remove it if not necessary any more
- also remove unused CarServiceApplication

bug: 31970410

Change-Id: I3f5ecb8a80fd450afdb58007e07e88527132edb9
diff --git a/service/src/com/android/car/hal/AudioHalService.java b/service/src/com/android/car/hal/AudioHalService.java
index c4ce31b..cb73454 100644
--- a/service/src/com/android/car/hal/AudioHalService.java
+++ b/service/src/com/android/car/hal/AudioHalService.java
@@ -375,7 +375,7 @@
                     VehicleNetworkConsts.VEHICLE_PROPERTY_AUDIO_VOLUME, payload);
         } catch (ServiceSpecificException e) {
             Log.e(CarLog.TAG_AUDIO, "Cannot write to VEHICLE_PROPERTY_AUDIO_VOLUME", e);
-            //TODO should reset volume
+            //TODO should reset volume, bug: 32096870
         }
     }