Cleanup.

src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java

@@ -635,6 +635,7 @@ public class TrackRecordingService extends Service implements TrackPointCreator.
             return Objects.hash(track, latestTrackPoint, sensorDataSet);
         }
 
+        @NonNull
         @Override
         public String toString() {
             return "RecordingData{" +

src/main/java/de/dennisguse/opentracks/services/handlers/TrackPointCreator.java

@@ -112,8 +112,6 @@ public class TrackPointCreator implements BluetoothRemoteSensorManager.SensorDat
 
     /**
      * Got a new TrackPoint from Bluetooth only; contains no GPS location.
-     *
-     * @param sensorDataSet
      */
     @Override
     public void onChange(SensorDataSet sensorDataSet) {