Bluetooth: Make notifications local-only

This will prevent them from showing up on external devices where they
would be less than useful.

Test: connect to watch and pair a device
Bug: 34612389
Change-Id: I8b02c20200ce78a73967b8121cf7d5653b68f356

src/com/android/settings/bluetooth/BluetoothPairingService.java

@@ -107,7 +107,8 @@ public final class BluetoothPairingService extends Service {
         Resources res = getResources();
         Notification.Builder builder = new Notification.Builder(this)
                 .setSmallIcon(android.R.drawable.stat_sys_data_bluetooth)
-                .setTicker(res.getString(R.string.bluetooth_notif_ticker));
+                .setTicker(res.getString(R.string.bluetooth_notif_ticker))
+                .setLocalOnly(true);
 
         PendingIntent pairIntent = PendingIntent.getActivity(this, 0,
                 getPairingDialogIntent(this, intent), PendingIntent.FLAG_ONE_SHOT);