remove check if URL isEmpty; dont set 5055 as default port

app/src/test/java/org/traccar/client/ProtocolFormatterTest.java

@@ -22,7 +22,7 @@ public class ProtocolFormatterTest {
         Position position = new Position("123456789012345", new Location("gps"), 0);
         position.setTime(new Date(0));
 
-        String url = ProtocolFormatter.formatRequest("http://localhost", position);
+        String url = ProtocolFormatter.formatRequest("http://localhost:5055", position);
         assertEquals("http://localhost:5055?id=123456789012345&timestamp=0&lat=0.0&lon=0.0&speed=0.0&bearing=0.0&altitude=0.0&batt=0.0", url);
     }