code: public void removeExtendedRow(final DynaFormRow rowToBeRemoved) {
          final int idx = rowToBeRemoved != null ? extendedRows.indexOf(rowToBeRemoved) : -1;
          if (idx >= 0) {
              removeRow(extendedRows, rowToBeRemoved, idx);
          }
      }
docs: Removes the passed extended row.
  
  @param rowToBeRemoved {@link DynaFormRow} to be removed