Removed Waypoint default constructor used by testing.

This avoids a null check for Waypoint.getLocation().

src/main/java/de/dennisguse/opentracks/content/data/Track.java

@@ -16,11 +16,6 @@
 
 package de.dennisguse.opentracks.content.data;
 
-import androidx.annotation.VisibleForTesting;
-
-import java.util.ArrayList;
-import java.util.List;
-
 import de.dennisguse.opentracks.stats.TrackStatistics;
 
 /**
@@ -40,10 +35,6 @@ public class Track {
 
     private TrackStatistics trackStatistics = new TrackStatistics();
 
-    // Location points (which may not have been loaded)
-    @Deprecated //TODO Is only used by tests
-    private List<TrackPoint> trackPoints = new ArrayList<>();
-
     public Track() {
     }
 
@@ -94,21 +85,4 @@ public class Track {
     public void setTrackStatistics(TrackStatistics trackStatistics) {
         this.trackStatistics = trackStatistics;
     }
-
-    @Deprecated
-    @VisibleForTesting
-    public void addTrackPoint(TrackPoint location) {
-        trackPoints.add(location);
-    }
-
-    @VisibleForTesting
-    @Deprecated //TODO Only used for testing; can be removed?
-    public List<TrackPoint> getTrackPoints() {
-        return trackPoints;
-    }
-
-    @Deprecated //TODO Remove
-    public void setTrackPoints(ArrayList<TrackPoint> trackPoints) {
-        this.trackPoints = trackPoints;
-    }
 }