Pebble: for 3.x notification, do not zero parent UUID

instead reuse the same reandom UUID again.

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/pebble/PebbleProtocol.java

@@ -404,7 +404,6 @@ public class PebbleProtocol extends GBDeviceProtocol {
 
         // pin - 46 bytes
         buf.put(uuid_buf); // random UUID
-        Arrays.fill(uuid_buf, (byte) 0);
         buf.put(uuid_buf); // parent UUID
         buf.putInt(timestamp); // 32-bit timestamp
         buf.putShort((short) 0); // duration