Merge pull request #10 from rextivlan/dev_ali

Fix issue #9 to improve Reliability and remove Technical Debt

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

@@ -124,7 +124,6 @@ public boolean onCreate() {
     boolean onCreate(Context context) {
         try (CustomSQLiteOpenHelper databaseHelper = new CustomSQLiteOpenHelper(context)) {
             db = databaseHelper.getWritableDatabase();
-            // Necessary to enable cascade deletion from Track to TrackPoints and Markers
             db.setForeignKeyConstraintsEnabled(true);
           } catch (SQLiteException e) {
             Log.e(TAG, "Unable to open database for writing.", e);