code: public boolean deleteTableIfExists() {
          try {
              deleteTable();
          } catch (final ResourceNotFoundException e) {
              if (LOG.isTraceEnabled()) {
                  LOG.trace("Table does not exist, no need to delete", e);
              }
              return false;
          }
          return true;
      }
docs: Deletes the table and ignores the {@code ResourceNotFoundException} if
  it does not already exist.
  @return True if the table was deleted, or false if the table did not exist.
  @see com.amazonaws.services.dynamodbv2.AmazonDynamoDB#deleteTable
  @see com.amazonaws.services.dynamodbv2.model.DeleteTableRequest