Remove OAF Customization

First, list your customization to get the exact path:

begin
  jdr_utils.listdocuments('/oracle/apps/ar/hz/components/search/server',TRUE);
end;

Then, remove it:

begin
  jdr_utils.deletedocument(p_document => '/oracle/apps/ar/hz/components/search/server/customizations/site/0/HzPuiDQMSrchResultsVO');
  COMMIT;
end;