Remove unused parameter

Test: presubmit. Non-functional change.
Bug: b/321969740
Change-Id: I922f15078c89c14c8fe290f7337abf36261ab9c5

src/com/android/settings/notification/RemoteVolumeGroupController.java

@@ -68,7 +68,7 @@ public class RemoteVolumeGroupController extends BasePreferenceController implem
     public RemoteVolumeGroupController(Context context, String preferenceKey) {
         super(context, preferenceKey);
         if (mLocalMediaManager == null) {
-            mLocalMediaManager = new LocalMediaManager(mContext, null, null);
+            mLocalMediaManager = new LocalMediaManager(mContext, /* packageName= */ null);
             mLocalMediaManager.registerCallback(this);
             mLocalMediaManager.startScan();
         }