How to delete datadefinition and Template

Script for deleting the datadefinition
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BEGIN
XDO_DS_DEFINITIONS_PKG.DELETE_ROW(‘XX’,’XXHR_EUREH_GEOS_ERROR_REPORT’);
Commit;
END;
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script for deleting the template
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BEGIN
XDO_TEMPLATES_PKG.DELETE_ROW(‘XX’,’XXHR_EUREH_GEOS_ERROR_REPORT’);
Commit;
END;

OR

declare
begin
delete   from XDO_TEMPLATES_B        where template_code    = <template_code>
delete   from XDO_TEMPLATES_TL       where template_code    = <template_code>
delete   from xdo_lobs               where lob_code         = <template_code>
delete   from XDO_DS_DEFINITIONS_TL  where data_source_code = <def_code>
delete   from XDO_DS_DEFINITIONS_b   where data_source_code = <def_code>
end;

Commit;