Cleanup: simplify stream by using List operations (desugar).

src/main/java/de/dennisguse/opentracks/data/TrackDataHub.java

@@ -386,7 +386,7 @@ public class TrackDataHub {
             lastSeenTrackPointId = localLastSeenTrackPointIdId;
         }
 
-        listeners.stream().forEach(Listener::onNewTrackPointsDone);
+        listeners.forEach(Listener::onNewTrackPointsDone);
     }
 
 

src/main/java/de/dennisguse/opentracks/data/TrackSelection.java

@@ -70,7 +70,7 @@ public class TrackSelection implements ContentProviderUtils.ContentProviderSelec
         ArrayList<String> args = trackIds.stream().map(id -> Long.toString(id.id())).collect(Collectors.toCollection(ArrayList::new));
         args.addAll(categories);
         args.addAll(fromToArgs);
-        selectionArgs = args.stream().toArray(String[]::new);
+        selectionArgs = args.toArray(String[]::new);
 
         return new SelectionData(selection, selectionArgs);
     }