code: public boolean delete(final long id) {
          SQLiteDatabase database = openDB();
          try {
              int delete = database.delete(tableName, EntityData.getEntityData(entityClass).primaryKey.getName() + "= ?", new String[]{Long.toString(id)});
              return delete == 1;
          } finally {
              closeDB(database);
          }
      }
docs: Deletes the data of the {@link Entity} for the given id
  
  @param id primary key of the {@link Entity} to be deleted
  @return <code>true</code> if the {@link Entity} could be deleted, <code>false</code> otherwise